materials

23 files changed, 9046 insertions, 0 deletions

diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/Gvu-logo.gif b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/Gvu-logo.gif
new file mode 100644
index 0000000..55b66cb
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/Gvu-logo.gif
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/RMIT.gif b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/RMIT.gif
new file mode 100644
index 0000000..4f21bf7
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/RMIT.gif
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/USP.gif b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/USP.gif
new file mode 100644
index 0000000..891564f
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/USP.gif
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/builder.js b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/builder.js
new file mode 100644
index 0000000..8301999
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/builder.js
@@ -0,0 +1,136 @@
+// script.aculo.us builder.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
+
+var Builder = {
+  NODEMAP: {
+    AREA: 'map',
+    CAPTION: 'table',
+    COL: 'table',
+    COLGROUP: 'table',
+    LEGEND: 'fieldset',
+    OPTGROUP: 'select',
+    OPTION: 'select',
+    PARAM: 'object',
+    TBODY: 'table',
+    TD: 'table',
+    TFOOT: 'table',
+    TH: 'table',
+    THEAD: 'table',
+    TR: 'table'
+  },
+  // note: For Firefox < 1.5, OPTION and OPTGROUP tags are currently broken,
+  //       due to a Firefox bug
+  node: function(elementName) {
+    elementName = elementName.toUpperCase();
+    
+    // try innerHTML approach
+    var parentTag = this.NODEMAP[elementName] || 'div';
+    var parentElement = document.createElement(parentTag);
+    try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
+      parentElement.innerHTML = "<" + elementName + "></" + elementName + ">";
+    } catch(e) {}
+    var element = parentElement.firstChild || null;
+      
+    // see if browser added wrapping tags
+    if(element && (element.tagName.toUpperCase() != elementName))
+      element = element.getElementsByTagName(elementName)[0];
+    
+    // fallback to createElement approach
+    if(!element) element = document.createElement(elementName);
+    
+    // abort if nothing could be created
+    if(!element) return;
+
+    // attributes (or text)
+    if(arguments[1])
+      if(this._isStringOrNumber(arguments[1]) ||
+        (arguments[1] instanceof Array) ||
+        arguments[1].tagName) {
+          this._children(element, arguments[1]);
+        } else {
+          var attrs = this._attributes(arguments[1]);
+          if(attrs.length) {
+            try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
+              parentElement.innerHTML = "<" +elementName + " " +
+                attrs + "></" + elementName + ">";
+            } catch(e) {}
+            element = parentElement.firstChild || null;
+            // workaround firefox 1.0.X bug
+            if(!element) {
+              element = document.createElement(elementName);
+              for(attr in arguments[1]) 
+                element[attr == 'class' ? 'className' : attr] = arguments[1][attr];
+            }
+            if(element.tagName.toUpperCase() != elementName)
+              element = parentElement.getElementsByTagName(elementName)[0];
+          }
+        } 
+
+    // text, or array of children
+    if(arguments[2])
+      this._children(element, arguments[2]);
+
+     return element;
+  },
+  _text: function(text) {
+     return document.createTextNode(text);
+  },
+
+  ATTR_MAP: {
+    'className': 'class',
+    'htmlFor': 'for'
+  },
+
+  _attributes: function(attributes) {
+    var attrs = [];
+    for(attribute in attributes)
+      attrs.push((attribute in this.ATTR_MAP ? this.ATTR_MAP[attribute] : attribute) +
+          '="' + attributes[attribute].toString().escapeHTML().gsub(/"/,'&quot;') + '"');
+    return attrs.join(" ");
+  },
+  _children: function(element, children) {
+    if(children.tagName) {
+      element.appendChild(children);
+      return;
+    }
+    if(typeof children=='object') { // array can hold nodes and text
+      children.flatten().each( function(e) {
+        if(typeof e=='object')
+          element.appendChild(e)
+        else
+          if(Builder._isStringOrNumber(e))
+            element.appendChild(Builder._text(e));
+      });
+    } else
+      if(Builder._isStringOrNumber(children))
+        element.appendChild(Builder._text(children));
+  },
+  _isStringOrNumber: function(param) {
+    return(typeof param=='string' || typeof param=='number');
+  },
+  build: function(html) {
+    var element = this.node('div');
+    $(element).update(html.strip());
+    return element.down();
+  },
+  dump: function(scope) { 
+    if(typeof scope != 'object' && typeof scope != 'function') scope = window; //global scope 
+  
+    var tags = ("A ABBR ACRONYM ADDRESS APPLET AREA B BASE BASEFONT BDO BIG BLOCKQUOTE BODY " +
+      "BR BUTTON CAPTION CENTER CITE CODE COL COLGROUP DD DEL DFN DIR DIV DL DT EM FIELDSET " +
+      "FONT FORM FRAME FRAMESET H1 H2 H3 H4 H5 H6 HEAD HR HTML I IFRAME IMG INPUT INS ISINDEX "+
+      "KBD LABEL LEGEND LI LINK MAP MENU META NOFRAMES NOSCRIPT OBJECT OL OPTGROUP OPTION P "+
+      "PARAM PRE Q S SAMP SCRIPT SELECT SMALL SPAN STRIKE STRONG STYLE SUB SUP TABLE TBODY TD "+
+      "TEXTAREA TFOOT TH THEAD TITLE TR TT U UL VAR").split(/\s+/);
+  
+    tags.each( function(tag){ 
+      scope[tag] = function() { 
+        return Builder.node.apply(Builder, [tag].concat($A(arguments)));  
+      } 
+    });
+  }
+}
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/challenge b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/challenge
new file mode 100644
index 0000000..f36bc33
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/challenge
@@ -0,0 +1,14 @@
+
+var RecaptchaState = {
+    site : '6LeHWwAAAAAAAC5Fs-j9puLX-bLoF6zF_i91c6Vq',
+    rtl : false,
+    challenge : '03AHJ_Vut361IxU6MwtK4OR1Dc0wP3DI6oOJX6L3IO6AYMjbrL-v2G6ugou9ibrTmWl1xj4zZrCrt2d83iqV5QtUfNTAYp2EKit4sxIwj9uP-eyzKkekYEqfLkwXXBwQMCKvLwOKVnw9X5OxLDdeSISCathxty1CMYtaI06hYun6P7irSog9P5Zg8',
+    is_incorrect : false,
+    programming_error : '',
+    error_message : '',
+    server : 'http://www.google.com/recaptcha/api/',
+    lang : 'zh-CN',
+    timeout : 1800
+};
+
+document.write('<scr'+'ipt type="text/javascript" s'+'rc="' + RecaptchaState.server + 'js/recaptcha.js"></scr'+'ipt>');
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/controls.js b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/controls.js
new file mode 100644
index 0000000..5012cb8
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/controls.js
@@ -0,0 +1,965 @@
+// script.aculo.us controls.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//           (c) 2005-2007 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
+//           (c) 2005-2007 Jon Tirsen (http://www.tirsen.com)
+// Contributors:
+//  Richard Livsey
+//  Rahul Bhargava
+//  Rob Wills
+// 
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
+
+// Autocompleter.Base handles all the autocompletion functionality 
+// that's independent of the data source for autocompletion. This
+// includes drawing the autocompletion menu, observing keyboard
+// and mouse events, and similar.
+//
+// Specific autocompleters need to provide, at the very least, 
+// a getUpdatedChoices function that will be invoked every time
+// the text inside the monitored textbox changes. This method 
+// should get the text for which to provide autocompletion by
+// invoking this.getToken(), NOT by directly accessing
+// this.element.value. This is to allow incremental tokenized
+// autocompletion. Specific auto-completion logic (AJAX, etc)
+// belongs in getUpdatedChoices.
+//
+// Tokenized incremental autocompletion is enabled automatically
+// when an autocompleter is instantiated with the 'tokens' option
+// in the options parameter, e.g.:
+// new Ajax.Autocompleter('id','upd', '/url/', { tokens: ',' });
+// will incrementally autocomplete with a comma as the token.
+// Additionally, ',' in the above example can be replaced with
+// a token array, e.g. { tokens: [',', '\n'] } which
+// enables autocompletion on multiple tokens. This is most 
+// useful when one of the tokens is \n (a newline), as it 
+// allows smart autocompletion after linebreaks.
+
+if(typeof Effect == 'undefined')
+  throw("controls.js requires including script.aculo.us' effects.js library");
+
+var Autocompleter = { }
+Autocompleter.Base = Class.create({
+  baseInitialize: function(element, update, options) {
+    element          = $(element)
+    this.element     = element; 
+    this.update      = $(update);  
+    this.hasFocus    = false; 
+    this.changed     = false; 
+    this.active      = false; 
+    this.index       = 0;     
+    this.entryCount  = 0;
+    this.oldElementValue = this.element.value;
+
+    if(this.setOptions)
+      this.setOptions(options);
+    else
+      this.options = options || { };
+
+    this.options.paramName    = this.options.paramName || this.element.name;
+    this.options.tokens       = this.options.tokens || [];
+    this.options.frequency    = this.options.frequency || 0.4;
+    this.options.minChars     = this.options.minChars || 1;
+    this.options.onShow       = this.options.onShow || 
+      function(element, update){ 
+        if(!update.style.position || update.style.position=='absolute') {
+          update.style.position = 'absolute';
+          Position.clone(element, update, {
+            setHeight: false, 
+            offsetTop: element.offsetHeight
+          });
+        }
+        Effect.Appear(update,{duration:0.15});
+      };
+    this.options.onHide = this.options.onHide || 
+      function(element, update){ new Effect.Fade(update,{duration:0.15}) };
+
+    if(typeof(this.options.tokens) == 'string') 
+      this.options.tokens = new Array(this.options.tokens);
+    // Force carriage returns as token delimiters anyway
+    if (!this.options.tokens.include('\n'))
+      this.options.tokens.push('\n');
+
+    this.observer = null;
+    
+    this.element.setAttribute('autocomplete','off');
+
+    Element.hide(this.update);
+
+    Event.observe(this.element, 'blur', this.onBlur.bindAsEventListener(this));
+    Event.observe(this.element, 'keydown', this.onKeyPress.bindAsEventListener(this));
+  },
+
+  show: function() {
+    if(Element.getStyle(this.update, 'display')=='none') this.options.onShow(this.element, this.update);
+    if(!this.iefix && 
+      (Prototype.Browser.IE) &&
+      (Element.getStyle(this.update, 'position')=='absolute')) {
+      new Insertion.After(this.update, 
+       '<iframe id="' + this.update.id + '_iefix" '+
+       'style="display:none;position:absolute;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' +
+       'src="javascript:false;" frameborder="0" scrolling="no"></iframe>');
+      this.iefix = $(this.update.id+'_iefix');
+    }
+    if(this.iefix) setTimeout(this.fixIEOverlapping.bind(this), 50);
+  },
+  
+  fixIEOverlapping: function() {
+    Position.clone(this.update, this.iefix, {setTop:(!this.update.style.height)});
+    this.iefix.style.zIndex = 1;
+    this.update.style.zIndex = 2;
+    Element.show(this.iefix);
+  },
+
+  hide: function() {
+    this.stopIndicator();
+    if(Element.getStyle(this.update, 'display')!='none') this.options.onHide(this.element, this.update);
+    if(this.iefix) Element.hide(this.iefix);
+  },
+
+  startIndicator: function() {
+    if(this.options.indicator) Element.show(this.options.indicator);
+  },
+
+  stopIndicator: function() {
+    if(this.options.indicator) Element.hide(this.options.indicator);
+  },
+
+  onKeyPress: function(event) {
+    if(this.active)
+      switch(event.keyCode) {
+       case Event.KEY_TAB:
+       case Event.KEY_RETURN:
+         this.selectEntry();
+         Event.stop(event);
+       case Event.KEY_ESC:
+         this.hide();
+         this.active = false;
+         Event.stop(event);
+         return;
+       case Event.KEY_LEFT:
+       case Event.KEY_RIGHT:
+         return;
+       case Event.KEY_UP:
+         this.markPrevious();
+         this.render();
+         Event.stop(event);
+         return;
+       case Event.KEY_DOWN:
+         this.markNext();
+         this.render();
+         Event.stop(event);
+         return;
+      }
+     else 
+       if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN || 
+         (Prototype.Browser.WebKit > 0 && event.keyCode == 0)) return;
+
+    this.changed = true;
+    this.hasFocus = true;
+
+    if(this.observer) clearTimeout(this.observer);
+      this.observer = 
+        setTimeout(this.onObserverEvent.bind(this), this.options.frequency*1000);
+  },
+
+  activate: function() {
+    this.changed = false;
+    this.hasFocus = true;
+    this.getUpdatedChoices();
+  },
+
+  onHover: function(event) {
+    var element = Event.findElement(event, 'LI');
+    if(this.index != element.autocompleteIndex) 
+    {
+        this.index = element.autocompleteIndex;
+        this.render();
+    }
+    Event.stop(event);
+  },
+  
+  onClick: function(event) {
+    var element = Event.findElement(event, 'LI');
+    this.index = element.autocompleteIndex;
+    this.selectEntry();
+    this.hide();
+  },
+  
+  onBlur: function(event) {
+    // needed to make click events working
+    setTimeout(this.hide.bind(this), 250);
+    this.hasFocus = false;
+    this.active = false;     
+  }, 
+  
+  render: function() {
+    if(this.entryCount > 0) {
+      for (var i = 0; i < this.entryCount; i++)
+        this.index==i ? 
+          Element.addClassName(this.getEntry(i),"selected") : 
+          Element.removeClassName(this.getEntry(i),"selected");
+      if(this.hasFocus) { 
+        this.show();
+        this.active = true;
+      }
+    } else {
+      this.active = false;
+      this.hide();
+    }
+  },
+  
+  markPrevious: function() {
+    if(this.index > 0) this.index--
+      else this.index = this.entryCount-1;
+    this.getEntry(this.index).scrollIntoView(true);
+  },
+  
+  markNext: function() {
+    if(this.index < this.entryCount-1) this.index++
+      else this.index = 0;
+    this.getEntry(this.index).scrollIntoView(false);
+  },
+  
+  getEntry: function(index) {
+    return this.update.firstChild.childNodes[index];
+  },
+  
+  getCurrentEntry: function() {
+    return this.getEntry(this.index);
+  },
+  
+  selectEntry: function() {
+    this.active = false;
+    this.updateElement(this.getCurrentEntry());
+  },
+
+  updateElement: function(selectedElement) {
+    if (this.options.updateElement) {
+      this.options.updateElement(selectedElement);
+      return;
+    }
+    var value = '';
+    if (this.options.select) {
+      var nodes = $(selectedElement).select('.' + this.options.select) || [];
+      if(nodes.length>0) value = Element.collectTextNodes(nodes[0], this.options.select);
+    } else
+      value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal');
+    
+    var bounds = this.getTokenBounds();
+    if (bounds[0] != -1) {
+      var newValue = this.element.value.substr(0, bounds[0]);
+      var whitespace = this.element.value.substr(bounds[0]).match(/^\s+/);
+      if (whitespace)
+        newValue += whitespace[0];
+      this.element.value = newValue + value + this.element.value.substr(bounds[1]);
+    } else {
+      this.element.value = value;
+    }
+    this.oldElementValue = this.element.value;
+    this.element.focus();
+    
+    if (this.options.afterUpdateElement)
+      this.options.afterUpdateElement(this.element, selectedElement);
+  },
+
+  updateChoices: function(choices) {
+    if(!this.changed && this.hasFocus) {
+      this.update.innerHTML = choices;
+      Element.cleanWhitespace(this.update);
+      Element.cleanWhitespace(this.update.down());
+
+      if(this.update.firstChild && this.update.down().childNodes) {
+        this.entryCount = 
+          this.update.down().childNodes.length;
+        for (var i = 0; i < this.entryCount; i++) {
+          var entry = this.getEntry(i);
+          entry.autocompleteIndex = i;
+          this.addObservers(entry);
+        }
+      } else { 
+        this.entryCount = 0;
+      }
+
+      this.stopIndicator();
+      this.index = 0;
+      
+      if(this.entryCount==1 && this.options.autoSelect) {
+        this.selectEntry();
+        this.hide();
+      } else {
+        this.render();
+      }
+    }
+  },
+
+  addObservers: function(element) {
+    Event.observe(element, "mouseover", this.onHover.bindAsEventListener(this));
+    Event.observe(element, "click", this.onClick.bindAsEventListener(this));
+  },
+
+  onObserverEvent: function() {
+    this.changed = false;   
+    this.tokenBounds = null;
+    if(this.getToken().length>=this.options.minChars) {
+      this.getUpdatedChoices();
+    } else {
+      this.active = false;
+      this.hide();
+    }
+    this.oldElementValue = this.element.value;
+  },
+
+  getToken: function() {
+    var bounds = this.getTokenBounds();
+    return this.element.value.substring(bounds[0], bounds[1]).strip();
+  },
+
+  getTokenBounds: function() {
+    if (null != this.tokenBounds) return this.tokenBounds;
+    var value = this.element.value;
+    if (value.strip().empty()) return [-1, 0];
+    var diff = arguments.callee.getFirstDifferencePos(value, this.oldElementValue);
+    var offset = (diff == this.oldElementValue.length ? 1 : 0);
+    var prevTokenPos = -1, nextTokenPos = value.length;
+    var tp;
+    for (var index = 0, l = this.options.tokens.length; index < l; ++index) {
+      tp = value.lastIndexOf(this.options.tokens[index], diff + offset - 1);
+      if (tp > prevTokenPos) prevTokenPos = tp;
+      tp = value.indexOf(this.options.tokens[index], diff + offset);
+      if (-1 != tp && tp < nextTokenPos) nextTokenPos = tp;
+    }
+    return (this.tokenBounds = [prevTokenPos + 1, nextTokenPos]);
+  }
+});
+
+Autocompleter.Base.prototype.getTokenBounds.getFirstDifferencePos = function(newS, oldS) {
+  var boundary = Math.min(newS.length, oldS.length);
+  for (var index = 0; index < boundary; ++index)
+    if (newS[index] != oldS[index])
+      return index;
+  return boundary;
+};
+
+Ajax.Autocompleter = Class.create(Autocompleter.Base, {
+  initialize: function(element, update, url, options) {
+    this.baseInitialize(element, update, options);
+    this.options.asynchronous  = true;
+    this.options.onComplete    = this.onComplete.bind(this);
+    this.options.defaultParams = this.options.parameters || null;
+    this.url                   = url;
+  },
+
+  getUpdatedChoices: function() {
+    this.startIndicator();
+    
+    var entry = encodeURIComponent(this.options.paramName) + '=' + 
+      encodeURIComponent(this.getToken());
+
+    this.options.parameters = this.options.callback ?
+      this.options.callback(this.element, entry) : entry;
+
+    if(this.options.defaultParams) 
+      this.options.parameters += '&' + this.options.defaultParams;
+    
+    new Ajax.Request(this.url, this.options);
+  },
+
+  onComplete: function(request) {
+    this.updateChoices(request.responseText);
+  }
+});
+
+// The local array autocompleter. Used when you'd prefer to
+// inject an array of autocompletion options into the page, rather
+// than sending out Ajax queries, which can be quite slow sometimes.
+//
+// The constructor takes four parameters. The first two are, as usual,
+// the id of the monitored textbox, and id of the autocompletion menu.
+// The third is the array you want to autocomplete from, and the fourth
+// is the options block.
+//
+// Extra local autocompletion options:
+// - choices - How many autocompletion choices to offer
+//
+// - partialSearch - If false, the autocompleter will match entered
+//                    text only at the beginning of strings in the 
+//                    autocomplete array. Defaults to true, which will
+//                    match text at the beginning of any *word* in the
+//                    strings in the autocomplete array. If you want to
+//                    search anywhere in the string, additionally set
+//                    the option fullSearch to true (default: off).
+//
+// - fullSsearch - Search anywhere in autocomplete array strings.
+//
+// - partialChars - How many characters to enter before triggering
+//                   a partial match (unlike minChars, which defines
+//                   how many characters are required to do any match
+//                   at all). Defaults to 2.
+//
+// - ignoreCase - Whether to ignore case when autocompleting.
+//                 Defaults to true.
+//
+// It's possible to pass in a custom function as the 'selector' 
+// option, if you prefer to write your own autocompletion logic.
+// In that case, the other options above will not apply unless
+// you support them.
+
+Autocompleter.Local = Class.create(Autocompleter.Base, {
+  initialize: function(element, update, array, options) {
+    this.baseInitialize(element, update, options);
+    this.options.array = array;
+  },
+
+  getUpdatedChoices: function() {
+    this.updateChoices(this.options.selector(this));
+  },
+
+  setOptions: function(options) {
+    this.options = Object.extend({
+      choices: 10,
+      partialSearch: true,
+      partialChars: 2,
+      ignoreCase: true,
+      fullSearch: false,
+      selector: function(instance) {
+        var ret       = []; // Beginning matches
+        var partial   = []; // Inside matches
+        var entry     = instance.getToken();
+        var count     = 0;
+
+        for (var i = 0; i < instance.options.array.length &&  
+          ret.length < instance.options.choices ; i++) { 
+
+          var elem = instance.options.array[i];
+          var foundPos = instance.options.ignoreCase ? 
+            elem.toLowerCase().indexOf(entry.toLowerCase()) : 
+            elem.indexOf(entry);
+
+          while (foundPos != -1) {
+            if (foundPos == 0 && elem.length != entry.length) { 
+              ret.push("<li><strong>" + elem.substr(0, entry.length) + "</strong>" + 
+                elem.substr(entry.length) + "</li>");
+              break;
+            } else if (entry.length >= instance.options.partialChars && 
+              instance.options.partialSearch && foundPos != -1) {
+              if (instance.options.fullSearch || /\s/.test(elem.substr(foundPos-1,1))) {
+                partial.push("<li>" + elem.substr(0, foundPos) + "<strong>" +
+                  elem.substr(foundPos, entry.length) + "</strong>" + elem.substr(
+                  foundPos + entry.length) + "</li>");
+                break;
+              }
+            }
+
+            foundPos = instance.options.ignoreCase ? 
+              elem.toLowerCase().indexOf(entry.toLowerCase(), foundPos + 1) : 
+              elem.indexOf(entry, foundPos + 1);
+
+          }
+        }
+        if (partial.length)
+          ret = ret.concat(partial.slice(0, instance.options.choices - ret.length))
+        return "<ul>" + ret.join('') + "</ul>";
+      }
+    }, options || { });
+  }
+});
+
+// AJAX in-place editor and collection editor
+// Full rewrite by Christophe Porteneuve <tdd@tddsworld.com> (April 2007).
+
+// Use this if you notice weird scrolling problems on some browsers,
+// the DOM might be a bit confused when this gets called so do this
+// waits 1 ms (with setTimeout) until it does the activation
+Field.scrollFreeActivate = function(field) {
+  setTimeout(function() {
+    Field.activate(field);
+  }, 1);
+}
+
+Ajax.InPlaceEditor = Class.create({
+  initialize: function(element, url, options) {
+    this.url = url;
+    this.element = element = $(element);
+    this.prepareOptions();
+    this._controls = { };
+    arguments.callee.dealWithDeprecatedOptions(options); // DEPRECATION LAYER!!!
+    Object.extend(this.options, options || { });
+    if (!this.options.formId && this.element.id) {
+      this.options.formId = this.element.id + '-inplaceeditor';
+      if ($(this.options.formId))
+        this.options.formId = '';
+    }
+    if (this.options.externalControl)
+      this.options.externalControl = $(this.options.externalControl);
+    if (!this.options.externalControl)
+      this.options.externalControlOnly = false;
+    this._originalBackground = this.element.getStyle('background-color') || 'transparent';
+    this.element.title = this.options.clickToEditText;
+    this._boundCancelHandler = this.handleFormCancellation.bind(this);
+    this._boundComplete = (this.options.onComplete || Prototype.emptyFunction).bind(this);
+    this._boundFailureHandler = this.handleAJAXFailure.bind(this);
+    this._boundSubmitHandler = this.handleFormSubmission.bind(this);
+    this._boundWrapperHandler = this.wrapUp.bind(this);
+    this.registerListeners();
+  },
+  checkForEscapeOrReturn: function(e) {
+    if (!this._editing || e.ctrlKey || e.altKey || e.shiftKey) return;
+    if (Event.KEY_ESC == e.keyCode)
+      this.handleFormCancellation(e);
+    else if (Event.KEY_RETURN == e.keyCode)
+      this.handleFormSubmission(e);
+  },
+  createControl: function(mode, handler, extraClasses) {
+    var control = this.options[mode + 'Control'];
+    var text = this.options[mode + 'Text'];
+    if ('button' == control) {
+      var btn = document.createElement('input');
+      btn.type = 'submit';
+      btn.value = text;
+      btn.className = 'editor_' + mode + '_button';
+      if ('cancel' == mode)
+        btn.onclick = this._boundCancelHandler;
+      this._form.appendChild(btn);
+      this._controls[mode] = btn;
+    } else if ('link' == control) {
+      var link = document.createElement('a');
+      link.href = '#';
+      link.appendChild(document.createTextNode(text));
+      link.onclick = 'cancel' == mode ? this._boundCancelHandler : this._boundSubmitHandler;
+      link.className = 'editor_' + mode + '_link';
+      if (extraClasses)
+        link.className += ' ' + extraClasses;
+      this._form.appendChild(link);
+      this._controls[mode] = link;
+    }
+  },
+  createEditField: function() {
+    var text = (this.options.loadTextURL ? this.options.loadingText : this.getText());
+    var fld;
+    if (1 >= this.options.rows && !/\r|\n/.test(this.getText())) {
+      fld = document.createElement('input');
+      fld.type = 'text';
+      var size = this.options.size || this.options.cols || 0;
+      if (0 < size) fld.size = size;
+    } else {
+      fld = document.createElement('textarea');
+      fld.rows = (1 >= this.options.rows ? this.options.autoRows : this.options.rows);
+      fld.cols = this.options.cols || 40;
+    }
+    fld.name = this.options.paramName;
+    fld.value = text; // No HTML breaks conversion anymore
+    fld.className = 'editor_field';
+    if (this.options.submitOnBlur)
+      fld.onblur = this._boundSubmitHandler;
+    this._controls.editor = fld;
+    if (this.options.loadTextURL)
+      this.loadExternalText();
+    this._form.appendChild(this._controls.editor);
+  },
+  createForm: function() {
+    var ipe = this;
+    function addText(mode, condition) {
+      var text = ipe.options['text' + mode + 'Controls'];
+      if (!text || condition === false) return;
+      ipe._form.appendChild(document.createTextNode(text));
+    };
+    this._form = $(document.createElement('form'));
+    this._form.id = this.options.formId;
+    this._form.addClassName(this.options.formClassName);
+    this._form.onsubmit = this._boundSubmitHandler;
+    this.createEditField();
+    if ('textarea' == this._controls.editor.tagName.toLowerCase())
+      this._form.appendChild(document.createElement('br'));
+    if (this.options.onFormCustomization)
+      this.options.onFormCustomization(this, this._form);
+    addText('Before', this.options.okControl || this.options.cancelControl);
+    this.createControl('ok', this._boundSubmitHandler);
+    addText('Between', this.options.okControl && this.options.cancelControl);
+    this.createControl('cancel', this._boundCancelHandler, 'editor_cancel');
+    addText('After', this.options.okControl || this.options.cancelControl);
+  },
+  destroy: function() {
+    if (this._oldInnerHTML)
+      this.element.innerHTML = this._oldInnerHTML;
+    this.leaveEditMode();
+    this.unregisterListeners();
+  },
+  enterEditMode: function(e) {
+    if (this._saving || this._editing) return;
+    this._editing = true;
+    this.triggerCallback('onEnterEditMode');
+    if (this.options.externalControl)
+      this.options.externalControl.hide();
+    this.element.hide();
+    this.createForm();
+    this.element.parentNode.insertBefore(this._form, this.element);
+    if (!this.options.loadTextURL)
+      this.postProcessEditField();
+    if (e) Event.stop(e);
+  },
+  enterHover: function(e) {
+    if (this.options.hoverClassName)
+      this.element.addClassName(this.options.hoverClassName);
+    if (this._saving) return;
+    this.triggerCallback('onEnterHover');
+  },
+  getText: function() {
+    return this.element.innerHTML;
+  },
+  handleAJAXFailure: function(transport) {
+    this.triggerCallback('onFailure', transport);
+    if (this._oldInnerHTML) {
+      this.element.innerHTML = this._oldInnerHTML;
+      this._oldInnerHTML = null;
+    }
+  },
+  handleFormCancellation: function(e) {
+    this.wrapUp();
+    if (e) Event.stop(e);
+  },
+  handleFormSubmission: function(e) {
+    var form = this._form;
+    var value = $F(this._controls.editor);
+    this.prepareSubmission();
+    var params = this.options.callback(form, value) || '';
+    if (Object.isString(params))
+      params = params.toQueryParams();
+    params.editorId = this.element.id;
+    if (this.options.htmlResponse) {
+      var options = Object.extend({ evalScripts: true }, this.options.ajaxOptions);
+      Object.extend(options, {
+        parameters: params,
+        onComplete: this._boundWrapperHandler,
+        onFailure: this._boundFailureHandler
+      });
+      new Ajax.Updater({ success: this.element }, this.url, options);
+    } else {
+      var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
+      Object.extend(options, {
+        parameters: params,
+        onComplete: this._boundWrapperHandler,
+        onFailure: this._boundFailureHandler
+      });
+      new Ajax.Request(this.url, options);
+    }
+    if (e) Event.stop(e);
+  },
+  leaveEditMode: function() {
+    this.element.removeClassName(this.options.savingClassName);
+    this.removeForm();
+    this.leaveHover();
+    this.element.style.backgroundColor = this._originalBackground;
+    this.element.show();
+    if (this.options.externalControl)
+      this.options.externalControl.show();
+    this._saving = false;
+    this._editing = false;
+    this._oldInnerHTML = null;
+    this.triggerCallback('onLeaveEditMode');
+  },
+  leaveHover: function(e) {
+    if (this.options.hoverClassName)
+      this.element.removeClassName(this.options.hoverClassName);
+    if (this._saving) return;
+    this.triggerCallback('onLeaveHover');
+  },
+  loadExternalText: function() {
+    this._form.addClassName(this.options.loadingClassName);
+    this._controls.editor.disabled = true;
+    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
+    Object.extend(options, {
+      parameters: 'editorId=' + encodeURIComponent(this.element.id),
+      onComplete: Prototype.emptyFunction,
+      onSuccess: function(transport) {
+        this._form.removeClassName(this.options.loadingClassName);
+        var text = transport.responseText;
+        if (this.options.stripLoadedTextTags)
+          text = text.stripTags();
+        this._controls.editor.value = text;
+        this._controls.editor.disabled = false;
+        this.postProcessEditField();
+      }.bind(this),
+      onFailure: this._boundFailureHandler
+    });
+    new Ajax.Request(this.options.loadTextURL, options);
+  },
+  postProcessEditField: function() {
+    var fpc = this.options.fieldPostCreation;
+    if (fpc)
+      $(this._controls.editor)['focus' == fpc ? 'focus' : 'activate']();
+  },
+  prepareOptions: function() {
+    this.options = Object.clone(Ajax.InPlaceEditor.DefaultOptions);
+    Object.extend(this.options, Ajax.InPlaceEditor.DefaultCallbacks);
+    [this._extraDefaultOptions].flatten().compact().each(function(defs) {
+      Object.extend(this.options, defs);
+    }.bind(this));
+  },
+  prepareSubmission: function() {
+    this._saving = true;
+    this.removeForm();
+    this.leaveHover();
+    this.showSaving();
+  },
+  registerListeners: function() {
+    this._listeners = { };
+    var listener;
+    $H(Ajax.InPlaceEditor.Listeners).each(function(pair) {
+      listener = this[pair.value].bind(this);
+      this._listeners[pair.key] = listener;
+      if (!this.options.externalControlOnly)
+        this.element.observe(pair.key, listener);
+      if (this.options.externalControl)
+        this.options.externalControl.observe(pair.key, listener);
+    }.bind(this));
+  },
+  removeForm: function() {
+    if (!this._form) return;
+    this._form.remove();
+    this._form = null;
+    this._controls = { };
+  },
+  showSaving: function() {
+    this._oldInnerHTML = this.element.innerHTML;
+    this.element.innerHTML = this.options.savingText;
+    this.element.addClassName(this.options.savingClassName);
+    this.element.style.backgroundColor = this._originalBackground;
+    this.element.show();
+  },
+  triggerCallback: function(cbName, arg) {
+    if ('function' == typeof this.options[cbName]) {
+      this.options[cbName](this, arg);
+    }
+  },
+  unregisterListeners: function() {
+    $H(this._listeners).each(function(pair) {
+      if (!this.options.externalControlOnly)
+        this.element.stopObserving(pair.key, pair.value);
+      if (this.options.externalControl)
+        this.options.externalControl.stopObserving(pair.key, pair.value);
+    }.bind(this));
+  },
+  wrapUp: function(transport) {
+    this.leaveEditMode();
+    // Can't use triggerCallback due to backward compatibility: requires
+    // binding + direct element
+    this._boundComplete(transport, this.element);
+  }
+});
+
+Object.extend(Ajax.InPlaceEditor.prototype, {
+  dispose: Ajax.InPlaceEditor.prototype.destroy
+});
+
+Ajax.InPlaceCollectionEditor = Class.create(Ajax.InPlaceEditor, {
+  initialize: function($super, element, url, options) {
+    this._extraDefaultOptions = Ajax.InPlaceCollectionEditor.DefaultOptions;
+    $super(element, url, options);
+  },
+
+  createEditField: function() {
+    var list = document.createElement('select');
+    list.name = this.options.paramName;
+    list.size = 1;
+    this._controls.editor = list;
+    this._collection = this.options.collection || [];
+    if (this.options.loadCollectionURL)
+      this.loadCollection();
+    else
+      this.checkForExternalText();
+    this._form.appendChild(this._controls.editor);
+  },
+
+  loadCollection: function() {
+    this._form.addClassName(this.options.loadingClassName);
+    this.showLoadingText(this.options.loadingCollectionText);
+    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
+    Object.extend(options, {
+      parameters: 'editorId=' + encodeURIComponent(this.element.id),
+      onComplete: Prototype.emptyFunction,
+      onSuccess: function(transport) {
+        var js = transport.responseText.strip();
+        if (!/^\[.*\]$/.test(js)) // TODO: improve sanity check
+          throw 'Server returned an invalid collection representation.';
+        this._collection = eval(js);
+        this.checkForExternalText();
+      }.bind(this),
+      onFailure: this.onFailure
+    });
+    new Ajax.Request(this.options.loadCollectionURL, options);
+  },
+
+  showLoadingText: function(text) {
+    this._controls.editor.disabled = true;
+    var tempOption = this._controls.editor.firstChild;
+    if (!tempOption) {
+      tempOption = document.createElement('option');
+      tempOption.value = '';
+      this._controls.editor.appendChild(tempOption);
+      tempOption.selected = true;
+    }
+    tempOption.update((text || '').stripScripts().stripTags());
+  },
+
+  checkForExternalText: function() {
+    this._text = this.getText();
+    if (this.options.loadTextURL)
+      this.loadExternalText();
+    else
+      this.buildOptionList();
+  },
+
+  loadExternalText: function() {
+    this.showLoadingText(this.options.loadingText);
+    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
+    Object.extend(options, {
+      parameters: 'editorId=' + encodeURIComponent(this.element.id),
+      onComplete: Prototype.emptyFunction,
+      onSuccess: function(transport) {
+        this._text = transport.responseText.strip();
+        this.buildOptionList();
+      }.bind(this),
+      onFailure: this.onFailure
+    });
+    new Ajax.Request(this.options.loadTextURL, options);
+  },
+
+  buildOptionList: function() {
+    this._form.removeClassName(this.options.loadingClassName);
+    this._collection = this._collection.map(function(entry) {
+      return 2 === entry.length ? entry : [entry, entry].flatten();
+    });
+    var marker = ('value' in this.options) ? this.options.value : this._text;
+    var textFound = this._collection.any(function(entry) {
+      return entry[0] == marker;
+    }.bind(this));
+    this._controls.editor.update('');
+    var option;
+    this._collection.each(function(entry, index) {
+      option = document.createElement('option');
+      option.value = entry[0];
+      option.selected = textFound ? entry[0] == marker : 0 == index;
+      option.appendChild(document.createTextNode(entry[1]));
+      this._controls.editor.appendChild(option);
+    }.bind(this));
+    this._controls.editor.disabled = false;
+    Field.scrollFreeActivate(this._controls.editor);
+  }
+});
+
+//**** DEPRECATION LAYER FOR InPlace[Collection]Editor! ****
+//**** This only  exists for a while,  in order to  let ****
+//**** users adapt to  the new API.  Read up on the new ****
+//**** API and convert your code to it ASAP!            ****
+
+Ajax.InPlaceEditor.prototype.initialize.dealWithDeprecatedOptions = function(options) {
+  if (!options) return;
+  function fallback(name, expr) {
+    if (name in options || expr === undefined) return;
+    options[name] = expr;
+  };
+  fallback('cancelControl', (options.cancelLink ? 'link' : (options.cancelButton ? 'button' :
+    options.cancelLink == options.cancelButton == false ? false : undefined)));
+  fallback('okControl', (options.okLink ? 'link' : (options.okButton ? 'button' :
+    options.okLink == options.okButton == false ? false : undefined)));
+  fallback('highlightColor', options.highlightcolor);
+  fallback('highlightEndColor', options.highlightendcolor);
+};
+
+Object.extend(Ajax.InPlaceEditor, {
+  DefaultOptions: {
+    ajaxOptions: { },
+    autoRows: 3,                                // Use when multi-line w/ rows == 1
+    cancelControl: 'link',                      // 'link'|'button'|false
+    cancelText: 'cancel',
+    clickToEditText: 'Click to edit',
+    externalControl: null,                      // id|elt
+    externalControlOnly: false,
+    fieldPostCreation: 'activate',              // 'activate'|'focus'|false
+    formClassName: 'inplaceeditor-form',
+    formId: null,                               // id|elt
+    highlightColor: '#ffff99',
+    highlightEndColor: '#ffffff',
+    hoverClassName: '',
+    htmlResponse: true,
+    loadingClassName: 'inplaceeditor-loading',
+    loadingText: 'Loading...',
+    okControl: 'button',                        // 'link'|'button'|false
+    okText: 'ok',
+    paramName: 'value',
+    rows: 1,                                    // If 1 and multi-line, uses autoRows
+    savingClassName: 'inplaceeditor-saving',
+    savingText: 'Saving...',
+    size: 0,
+    stripLoadedTextTags: false,
+    submitOnBlur: false,
+    textAfterControls: '',
+    textBeforeControls: '',
+    textBetweenControls: ''
+  },
+  DefaultCallbacks: {
+    callback: function(form) {
+      return Form.serialize(form);
+    },
+    onComplete: function(transport, element) {
+      // For backward compatibility, this one is bound to the IPE, and passes
+      // the element directly.  It was too often customized, so we don't break it.
+      new Effect.Highlight(element, {
+        startcolor: this.options.highlightColor, keepBackgroundImage: true });
+    },
+    onEnterEditMode: null,
+    onEnterHover: function(ipe) {
+      ipe.element.style.backgroundColor = ipe.options.highlightColor;
+      if (ipe._effect)
+        ipe._effect.cancel();
+    },
+    onFailure: function(transport, ipe) {
+      alert('Error communication with the server: ' + transport.responseText.stripTags());
+    },
+    onFormCustomization: null, // Takes the IPE and its generated form, after editor, before controls.
+    onLeaveEditMode: null,
+    onLeaveHover: function(ipe) {
+      ipe._effect = new Effect.Highlight(ipe.element, {
+        startcolor: ipe.options.highlightColor, endcolor: ipe.options.highlightEndColor,
+        restorecolor: ipe._originalBackground, keepBackgroundImage: true
+      });
+    }
+  },
+  Listeners: {
+    click: 'enterEditMode',
+    keydown: 'checkForEscapeOrReturn',
+    mouseover: 'enterHover',
+    mouseout: 'leaveHover'
+  }
+});
+
+Ajax.InPlaceCollectionEditor.DefaultOptions = {
+  loadingCollectionText: 'Loading options...'
+};
+
+// Delayed observer, like Form.Element.Observer, 
+// but waits for delay after last key input
+// Ideal for live-search fields
+
+Form.Element.DelayedObserver = Class.create({
+  initialize: function(element, delay, callback) {
+    this.delay     = delay || 0.5;
+    this.element   = $(element);
+    this.callback  = callback;
+    this.timer     = null;
+    this.lastValue = $F(this.element); 
+    Event.observe(this.element,'keyup',this.delayedListener.bindAsEventListener(this));
+  },
+  delayedListener: function(event) {
+    if(this.lastValue == $F(this.element)) return;
+    if(this.timer) clearTimeout(this.timer);
+    this.timer = setTimeout(this.onTimerEvent.bind(this), this.delay * 1000);
+    this.lastValue = $F(this.element);
+  },
+  onTimerEvent: function() {
+    this.timer = null;
+    this.callback(this.element, $F(this.element));
+  }
+});
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/dragdrop.js b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/dragdrop.js
new file mode 100644
index 0000000..bf429c2
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/dragdrop.js
@@ -0,0 +1,974 @@
+// script.aculo.us dragdrop.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//           (c) 2005-2007 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz)
+// 
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
+
+if(Object.isUndefined(Effect))
+  throw("dragdrop.js requires including script.aculo.us' effects.js library");
+
+var Droppables = {
+  drops: [],
+
+  remove: function(element) {
+    this.drops = this.drops.reject(function(d) { return d.element==$(element) });
+  },
+
+  add: function(element) {
+    element = $(element);
+    var options = Object.extend({
+      greedy:     true,
+      hoverclass: null,
+      tree:       false
+    }, arguments[1] || { });
+
+    // cache containers
+    if(options.containment) {
+      options._containers = [];
+      var containment = options.containment;
+      if(Object.isArray(containment)) {
+        containment.each( function(c) { options._containers.push($(c)) });
+      } else {
+        options._containers.push($(containment));
+      }
+    }
+    
+    if(options.accept) options.accept = [options.accept].flatten();
+
+    Element.makePositioned(element); // fix IE
+    options.element = element;
+
+    this.drops.push(options);
+  },
+  
+  findDeepestChild: function(drops) {
+    deepest = drops[0];
+      
+    for (i = 1; i < drops.length; ++i)
+      if (Element.isParent(drops[i].element, deepest.element))
+        deepest = drops[i];
+    
+    return deepest;
+  },
+
+  isContained: function(element, drop) {
+    var containmentNode;
+    if(drop.tree) {
+      containmentNode = element.treeNode; 
+    } else {
+      containmentNode = element.parentNode;
+    }
+    return drop._containers.detect(function(c) { return containmentNode == c });
+  },
+  
+  isAffected: function(point, element, drop) {
+    return (
+      (drop.element!=element) &&
+      ((!drop._containers) ||
+        this.isContained(element, drop)) &&
+      ((!drop.accept) ||
+        (Element.classNames(element).detect( 
+          function(v) { return drop.accept.include(v) } ) )) &&
+      Position.within(drop.element, point[0], point[1]) );
+  },
+
+  deactivate: function(drop) {
+    if(drop.hoverclass)
+      Element.removeClassName(drop.element, drop.hoverclass);
+    this.last_active = null;
+  },
+
+  activate: function(drop) {
+    if(drop.hoverclass)
+      Element.addClassName(drop.element, drop.hoverclass);
+    this.last_active = drop;
+  },
+
+  show: function(point, element) {
+    if(!this.drops.length) return;
+    var drop, affected = [];
+    
+    this.drops.each( function(drop) {
+      if(Droppables.isAffected(point, element, drop))
+        affected.push(drop);
+    });
+        
+    if(affected.length>0)
+      drop = Droppables.findDeepestChild(affected);
+
+    if(this.last_active && this.last_active != drop) this.deactivate(this.last_active);
+    if (drop) {
+      Position.within(drop.element, point[0], point[1]);
+      if(drop.onHover)
+        drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
+      
+      if (drop != this.last_active) Droppables.activate(drop);
+    }
+  },
+
+  fire: function(event, element) {
+    if(!this.last_active) return;
+    Position.prepare();
+
+    if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active))
+      if (this.last_active.onDrop) {
+        this.last_active.onDrop(element, this.last_active.element, event); 
+        return true; 
+      }
+  },
+
+  reset: function() {
+    if(this.last_active)
+      this.deactivate(this.last_active);
+  }
+}
+
+var Draggables = {
+  drags: [],
+  observers: [],
+  
+  register: function(draggable) {
+    if(this.drags.length == 0) {
+      this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
+      this.eventMouseMove = this.updateDrag.bindAsEventListener(this);
+      this.eventKeypress  = this.keyPress.bindAsEventListener(this);
+      
+      Event.observe(document, "mouseup", this.eventMouseUp);
+      Event.observe(document, "mousemove", this.eventMouseMove);
+      Event.observe(document, "keypress", this.eventKeypress);
+    }
+    this.drags.push(draggable);
+  },
+  
+  unregister: function(draggable) {
+    this.drags = this.drags.reject(function(d) { return d==draggable });
+    if(this.drags.length == 0) {
+      Event.stopObserving(document, "mouseup", this.eventMouseUp);
+      Event.stopObserving(document, "mousemove", this.eventMouseMove);
+      Event.stopObserving(document, "keypress", this.eventKeypress);
+    }
+  },
+  
+  activate: function(draggable) {
+    if(draggable.options.delay) { 
+      this._timeout = setTimeout(function() { 
+        Draggables._timeout = null; 
+        window.focus(); 
+        Draggables.activeDraggable = draggable; 
+      }.bind(this), draggable.options.delay); 
+    } else {
+      window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
+      this.activeDraggable = draggable;
+    }
+  },
+  
+  deactivate: function() {
+    this.activeDraggable = null;
+  },
+  
+  updateDrag: function(event) {
+    if(!this.activeDraggable) return;
+    var pointer = [Event.pointerX(event), Event.pointerY(event)];
+    // Mozilla-based browsers fire successive mousemove events with
+    // the same coordinates, prevent needless redrawing (moz bug?)
+    if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return;
+    this._lastPointer = pointer;
+    
+    this.activeDraggable.updateDrag(event, pointer);
+  },
+  
+  endDrag: function(event) {
+    if(this._timeout) { 
+      clearTimeout(this._timeout); 
+      this._timeout = null; 
+    }
+    if(!this.activeDraggable) return;
+    this._lastPointer = null;
+    this.activeDraggable.endDrag(event);
+    this.activeDraggable = null;
+  },
+  
+  keyPress: function(event) {
+    if(this.activeDraggable)
+      this.activeDraggable.keyPress(event);
+  },
+  
+  addObserver: function(observer) {
+    this.observers.push(observer);
+    this._cacheObserverCallbacks();
+  },
+  
+  removeObserver: function(element) {  // element instead of observer fixes mem leaks
+    this.observers = this.observers.reject( function(o) { return o.element==element });
+    this._cacheObserverCallbacks();
+  },
+  
+  notify: function(eventName, draggable, event) {  // 'onStart', 'onEnd', 'onDrag'
+    if(this[eventName+'Count'] > 0)
+      this.observers.each( function(o) {
+        if(o[eventName]) o[eventName](eventName, draggable, event);
+      });
+    if(draggable.options[eventName]) draggable.options[eventName](draggable, event);
+  },
+  
+  _cacheObserverCallbacks: function() {
+    ['onStart','onEnd','onDrag'].each( function(eventName) {
+      Draggables[eventName+'Count'] = Draggables.observers.select(
+        function(o) { return o[eventName]; }
+      ).length;
+    });
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var Draggable = Class.create({
+  initialize: function(element) {
+    var defaults = {
+      handle: false,
+      reverteffect: function(element, top_offset, left_offset) {
+        var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02;
+        new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur,
+          queue: {scope:'_draggable', position:'end'}
+        });
+      },
+      endeffect: function(element) {
+        var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0;
+        new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity, 
+          queue: {scope:'_draggable', position:'end'},
+          afterFinish: function(){ 
+            Draggable._dragging[element] = false 
+          }
+        }); 
+      },
+      zindex: 1000,
+      revert: false,
+      quiet: false,
+      scroll: false,
+      scrollSensitivity: 20,
+      scrollSpeed: 15,
+      snap: false,  // false, or xy or [x,y] or function(x,y){ return [x,y] }
+      delay: 0
+    };
+    
+    if(!arguments[1] || Object.isUndefined(arguments[1].endeffect))
+      Object.extend(defaults, {
+        starteffect: function(element) {
+          element._opacity = Element.getOpacity(element);
+          Draggable._dragging[element] = true;
+          new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7}); 
+        }
+      });
+    
+    var options = Object.extend(defaults, arguments[1] || { });
+
+    this.element = $(element);
+    
+    if(options.handle && Object.isString(options.handle))
+      this.handle = this.element.down('.'+options.handle, 0);
+    
+    if(!this.handle) this.handle = $(options.handle);
+    if(!this.handle) this.handle = this.element;
+    
+    if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) {
+      options.scroll = $(options.scroll);
+      this._isScrollChild = Element.childOf(this.element, options.scroll);
+    }
+
+    Element.makePositioned(this.element); // fix IE    
+
+    this.options  = options;
+    this.dragging = false;   
+
+    this.eventMouseDown = this.initDrag.bindAsEventListener(this);
+    Event.observe(this.handle, "mousedown", this.eventMouseDown);
+    
+    Draggables.register(this);
+  },
+  
+  destroy: function() {
+    Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
+    Draggables.unregister(this);
+  },
+  
+  currentDelta: function() {
+    return([
+      parseInt(Element.getStyle(this.element,'left') || '0'),
+      parseInt(Element.getStyle(this.element,'top') || '0')]);
+  },
+  
+  initDrag: function(event) {
+    if(!Object.isUndefined(Draggable._dragging[this.element]) &&
+      Draggable._dragging[this.element]) return;
+    if(Event.isLeftClick(event)) {    
+      // abort on form elements, fixes a Firefox issue
+      var src = Event.element(event);
+      if((tag_name = src.tagName.toUpperCase()) && (
+        tag_name=='INPUT' ||
+        tag_name=='SELECT' ||
+        tag_name=='OPTION' ||
+        tag_name=='BUTTON' ||
+        tag_name=='TEXTAREA')) return;
+        
+      var pointer = [Event.pointerX(event), Event.pointerY(event)];
+      var pos     = Position.cumulativeOffset(this.element);
+      this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) });
+      
+      Draggables.activate(this);
+      Event.stop(event);
+    }
+  },
+  
+  startDrag: function(event) {
+    this.dragging = true;
+    if(!this.delta)
+      this.delta = this.currentDelta();
+    
+    if(this.options.zindex) {
+      this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
+      this.element.style.zIndex = this.options.zindex;
+    }
+    
+    if(this.options.ghosting) {
+      this._clone = this.element.cloneNode(true);
+      this.element._originallyAbsolute = (this.element.getStyle('position') == 'absolute');
+      if (!this.element._originallyAbsolute)
+        Position.absolutize(this.element);
+      this.element.parentNode.insertBefore(this._clone, this.element);
+    }
+    
+    if(this.options.scroll) {
+      if (this.options.scroll == window) {
+        var where = this._getWindowScroll(this.options.scroll);
+        this.originalScrollLeft = where.left;
+        this.originalScrollTop = where.top;
+      } else {
+        this.originalScrollLeft = this.options.scroll.scrollLeft;
+        this.originalScrollTop = this.options.scroll.scrollTop;
+      }
+    }
+    
+    Draggables.notify('onStart', this, event);
+        
+    if(this.options.starteffect) this.options.starteffect(this.element);
+  },
+  
+  updateDrag: function(event, pointer) {
+    if(!this.dragging) this.startDrag(event);
+    
+    if(!this.options.quiet){
+      Position.prepare();
+      Droppables.show(pointer, this.element);
+    }
+    
+    Draggables.notify('onDrag', this, event);
+    
+    this.draw(pointer);
+    if(this.options.change) this.options.change(this);
+    
+    if(this.options.scroll) {
+      this.stopScrolling();
+      
+      var p;
+      if (this.options.scroll == window) {
+        with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; }
+      } else {
+        p = Position.page(this.options.scroll);
+        p[0] += this.options.scroll.scrollLeft + Position.deltaX;
+        p[1] += this.options.scroll.scrollTop + Position.deltaY;
+        p.push(p[0]+this.options.scroll.offsetWidth);
+        p.push(p[1]+this.options.scroll.offsetHeight);
+      }
+      var speed = [0,0];
+      if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity);
+      if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity);
+      if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity);
+      if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity);
+      this.startScrolling(speed);
+    }
+    
+    // fix AppleWebKit rendering
+    if(Prototype.Browser.WebKit) window.scrollBy(0,0);
+    
+    Event.stop(event);
+  },
+  
+  finishDrag: function(event, success) {
+    this.dragging = false;
+    
+    if(this.options.quiet){
+      Position.prepare();
+      var pointer = [Event.pointerX(event), Event.pointerY(event)];
+      Droppables.show(pointer, this.element);
+    }
+
+    if(this.options.ghosting) {
+      if (!this.element._originallyAbsolute)
+        Position.relativize(this.element);
+      delete this.element._originallyAbsolute;
+      Element.remove(this._clone);
+      this._clone = null;
+    }
+
+    var dropped = false; 
+    if(success) { 
+      dropped = Droppables.fire(event, this.element); 
+      if (!dropped) dropped = false; 
+    }
+    if(dropped && this.options.onDropped) this.options.onDropped(this.element);
+    Draggables.notify('onEnd', this, event);
+
+    var revert = this.options.revert;
+    if(revert && Object.isFunction(revert)) revert = revert(this.element);
+    
+    var d = this.currentDelta();
+    if(revert && this.options.reverteffect) {
+      if (dropped == 0 || revert != 'failure')
+        this.options.reverteffect(this.element,
+          d[1]-this.delta[1], d[0]-this.delta[0]);
+    } else {
+      this.delta = d;
+    }
+
+    if(this.options.zindex)
+      this.element.style.zIndex = this.originalZ;
+
+    if(this.options.endeffect) 
+      this.options.endeffect(this.element);
+      
+    Draggables.deactivate(this);
+    Droppables.reset();
+  },
+  
+  keyPress: function(event) {
+    if(event.keyCode!=Event.KEY_ESC) return;
+    this.finishDrag(event, false);
+    Event.stop(event);
+  },
+  
+  endDrag: function(event) {
+    if(!this.dragging) return;
+    this.stopScrolling();
+    this.finishDrag(event, true);
+    Event.stop(event);
+  },
+  
+  draw: function(point) {
+    var pos = Position.cumulativeOffset(this.element);
+    if(this.options.ghosting) {
+      var r   = Position.realOffset(this.element);
+      pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY;
+    }
+    
+    var d = this.currentDelta();
+    pos[0] -= d[0]; pos[1] -= d[1];
+    
+    if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) {
+      pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft;
+      pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop;
+    }
+    
+    var p = [0,1].map(function(i){ 
+      return (point[i]-pos[i]-this.offset[i]) 
+    }.bind(this));
+    
+    if(this.options.snap) {
+      if(Object.isFunction(this.options.snap)) {
+        p = this.options.snap(p[0],p[1],this);
+      } else {
+      if(Object.isArray(this.options.snap)) {
+        p = p.map( function(v, i) {
+          return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this))
+      } else {
+        p = p.map( function(v) {
+          return (v/this.options.snap).round()*this.options.snap }.bind(this))
+      }
+    }}
+    
+    var style = this.element.style;
+    if((!this.options.constraint) || (this.options.constraint=='horizontal'))
+      style.left = p[0] + "px";
+    if((!this.options.constraint) || (this.options.constraint=='vertical'))
+      style.top  = p[1] + "px";
+    
+    if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering
+  },
+  
+  stopScrolling: function() {
+    if(this.scrollInterval) {
+      clearInterval(this.scrollInterval);
+      this.scrollInterval = null;
+      Draggables._lastScrollPointer = null;
+    }
+  },
+  
+  startScrolling: function(speed) {
+    if(!(speed[0] || speed[1])) return;
+    this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];
+    this.lastScrolled = new Date();
+    this.scrollInterval = setInterval(this.scroll.bind(this), 10);
+  },
+  
+  scroll: function() {
+    var current = new Date();
+    var delta = current - this.lastScrolled;
+    this.lastScrolled = current;
+    if(this.options.scroll == window) {
+      with (this._getWindowScroll(this.options.scroll)) {
+        if (this.scrollSpeed[0] || this.scrollSpeed[1]) {
+          var d = delta / 1000;
+          this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] );
+        }
+      }
+    } else {
+      this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
+      this.options.scroll.scrollTop  += this.scrollSpeed[1] * delta / 1000;
+    }
+    
+    Position.prepare();
+    Droppables.show(Draggables._lastPointer, this.element);
+    Draggables.notify('onDrag', this);
+    if (this._isScrollChild) {
+      Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer);
+      Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000;
+      Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000;
+      if (Draggables._lastScrollPointer[0] < 0)
+        Draggables._lastScrollPointer[0] = 0;
+      if (Draggables._lastScrollPointer[1] < 0)
+        Draggables._lastScrollPointer[1] = 0;
+      this.draw(Draggables._lastScrollPointer);
+    }
+    
+    if(this.options.change) this.options.change(this);
+  },
+  
+  _getWindowScroll: function(w) {
+    var T, L, W, H;
+    with (w.document) {
+      if (w.document.documentElement && documentElement.scrollTop) {
+        T = documentElement.scrollTop;
+        L = documentElement.scrollLeft;
+      } else if (w.document.body) {
+        T = body.scrollTop;
+        L = body.scrollLeft;
+      }
+      if (w.innerWidth) {
+        W = w.innerWidth;
+        H = w.innerHeight;
+      } else if (w.document.documentElement && documentElement.clientWidth) {
+        W = documentElement.clientWidth;
+        H = documentElement.clientHeight;
+      } else {
+        W = body.offsetWidth;
+        H = body.offsetHeight
+      }
+    }
+    return { top: T, left: L, width: W, height: H };
+  }
+});
+
+Draggable._dragging = { };
+
+/*--------------------------------------------------------------------------*/
+
+var SortableObserver = Class.create({
+  initialize: function(element, observer) {
+    this.element   = $(element);
+    this.observer  = observer;
+    this.lastValue = Sortable.serialize(this.element);
+  },
+  
+  onStart: function() {
+    this.lastValue = Sortable.serialize(this.element);
+  },
+  
+  onEnd: function() {
+    Sortable.unmark();
+    if(this.lastValue != Sortable.serialize(this.element))
+      this.observer(this.element)
+  }
+});
+
+var Sortable = {
+  SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,
+  
+  sortables: { },
+  
+  _findRootElement: function(element) {
+    while (element.tagName.toUpperCase() != "BODY") {  
+      if(element.id && Sortable.sortables[element.id]) return element;
+      element = element.parentNode;
+    }
+  },
+
+  options: function(element) {
+    element = Sortable._findRootElement($(element));
+    if(!element) return;
+    return Sortable.sortables[element.id];
+  },
+  
+  destroy: function(element){
+    var s = Sortable.options(element);
+    
+    if(s) {
+      Draggables.removeObserver(s.element);
+      s.droppables.each(function(d){ Droppables.remove(d) });
+      s.draggables.invoke('destroy');
+      
+      delete Sortable.sortables[s.element.id];
+    }
+  },
+
+  create: function(element) {
+    element = $(element);
+    var options = Object.extend({ 
+      element:     element,
+      tag:         'li',       // assumes li children, override with tag: 'tagname'
+      dropOnEmpty: false,
+      tree:        false,
+      treeTag:     'ul',
+      overlap:     'vertical', // one of 'vertical', 'horizontal'
+      constraint:  'vertical', // one of 'vertical', 'horizontal', false
+      containment: element,    // also takes array of elements (or id's); or false
+      handle:      false,      // or a CSS class
+      only:        false,
+      delay:       0,
+      hoverclass:  null,
+      ghosting:    false,
+      quiet:       false, 
+      scroll:      false,
+      scrollSensitivity: 20,
+      scrollSpeed: 15,
+      format:      this.SERIALIZE_RULE,
+      
+      // these take arrays of elements or ids and can be 
+      // used for better initialization performance
+      elements:    false,
+      handles:     false,
+      
+      onChange:    Prototype.emptyFunction,
+      onUpdate:    Prototype.emptyFunction
+    }, arguments[1] || { });
+
+    // clear any old sortable with same element
+    this.destroy(element);
+
+    // build options for the draggables
+    var options_for_draggable = {
+      revert:      true,
+      quiet:       options.quiet,
+      scroll:      options.scroll,
+      scrollSpeed: options.scrollSpeed,
+      scrollSensitivity: options.scrollSensitivity,
+      delay:       options.delay,
+      ghosting:    options.ghosting,
+      constraint:  options.constraint,
+      handle:      options.handle };
+
+    if(options.starteffect)
+      options_for_draggable.starteffect = options.starteffect;
+
+    if(options.reverteffect)
+      options_for_draggable.reverteffect = options.reverteffect;
+    else
+      if(options.ghosting) options_for_draggable.reverteffect = function(element) {
+        element.style.top  = 0;
+        element.style.left = 0;
+      };
+
+    if(options.endeffect)
+      options_for_draggable.endeffect = options.endeffect;
+
+    if(options.zindex)
+      options_for_draggable.zindex = options.zindex;
+
+    // build options for the droppables  
+    var options_for_droppable = {
+      overlap:     options.overlap,
+      containment: options.containment,
+      tree:        options.tree,
+      hoverclass:  options.hoverclass,
+      onHover:     Sortable.onHover
+    }
+    
+    var options_for_tree = {
+      onHover:      Sortable.onEmptyHover,
+      overlap:      options.overlap,
+      containment:  options.containment,
+      hoverclass:   options.hoverclass
+    }
+
+    // fix for gecko engine
+    Element.cleanWhitespace(element); 
+
+    options.draggables = [];
+    options.droppables = [];
+
+    // drop on empty handling
+    if(options.dropOnEmpty || options.tree) {
+      Droppables.add(element, options_for_tree);
+      options.droppables.push(element);
+    }
+
+    (options.elements || this.findElements(element, options) || []).each( function(e,i) {
+      var handle = options.handles ? $(options.handles[i]) :
+        (options.handle ? $(e).select('.' + options.handle)[0] : e); 
+      options.draggables.push(
+        new Draggable(e, Object.extend(options_for_draggable, { handle: handle })));
+      Droppables.add(e, options_for_droppable);
+      if(options.tree) e.treeNode = element;
+      options.droppables.push(e);      
+    });
+    
+    if(options.tree) {
+      (Sortable.findTreeElements(element, options) || []).each( function(e) {
+        Droppables.add(e, options_for_tree);
+        e.treeNode = element;
+        options.droppables.push(e);
+      });
+    }
+
+    // keep reference
+    this.sortables[element.id] = options;
+
+    // for onupdate
+    Draggables.addObserver(new SortableObserver(element, options.onUpdate));
+
+  },
+
+  // return all suitable-for-sortable elements in a guaranteed order
+  findElements: function(element, options) {
+    return Element.findChildren(
+      element, options.only, options.tree ? true : false, options.tag);
+  },
+  
+  findTreeElements: function(element, options) {
+    return Element.findChildren(
+      element, options.only, options.tree ? true : false, options.treeTag);
+  },
+
+  onHover: function(element, dropon, overlap) {
+    if(Element.isParent(dropon, element)) return;
+
+    if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) {
+      return;
+    } else if(overlap>0.5) {
+      Sortable.mark(dropon, 'before');
+      if(dropon.previousSibling != element) {
+        var oldParentNode = element.parentNode;
+        element.style.visibility = "hidden"; // fix gecko rendering
+        dropon.parentNode.insertBefore(element, dropon);
+        if(dropon.parentNode!=oldParentNode) 
+          Sortable.options(oldParentNode).onChange(element);
+        Sortable.options(dropon.parentNode).onChange(element);
+      }
+    } else {
+      Sortable.mark(dropon, 'after');
+      var nextElement = dropon.nextSibling || null;
+      if(nextElement != element) {
+        var oldParentNode = element.parentNode;
+        element.style.visibility = "hidden"; // fix gecko rendering
+        dropon.parentNode.insertBefore(element, nextElement);
+        if(dropon.parentNode!=oldParentNode) 
+          Sortable.options(oldParentNode).onChange(element);
+        Sortable.options(dropon.parentNode).onChange(element);
+      }
+    }
+  },
+  
+  onEmptyHover: function(element, dropon, overlap) {
+    var oldParentNode = element.parentNode;
+    var droponOptions = Sortable.options(dropon);
+        
+    if(!Element.isParent(dropon, element)) {
+      var index;
+      
+      var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only});
+      var child = null;
+            
+      if(children) {
+        var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap);
+        
+        for (index = 0; index < children.length; index += 1) {
+          if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) {
+            offset -= Element.offsetSize (children[index], droponOptions.overlap);
+          } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) {
+            child = index + 1 < children.length ? children[index + 1] : null;
+            break;
+          } else {
+            child = children[index];
+            break;
+          }
+        }
+      }
+      
+      dropon.insertBefore(element, child);
+      
+      Sortable.options(oldParentNode).onChange(element);
+      droponOptions.onChange(element);
+    }
+  },
+
+  unmark: function() {
+    if(Sortable._marker) Sortable._marker.hide();
+  },
+
+  mark: function(dropon, position) {
+    // mark on ghosting only
+    var sortable = Sortable.options(dropon.parentNode);
+    if(sortable && !sortable.ghosting) return; 
+
+    if(!Sortable._marker) {
+      Sortable._marker = 
+        ($('dropmarker') || Element.extend(document.createElement('DIV'))).
+          hide().addClassName('dropmarker').setStyle({position:'absolute'});
+      document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);
+    }    
+    var offsets = Position.cumulativeOffset(dropon);
+    Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'});
+    
+    if(position=='after')
+      if(sortable.overlap == 'horizontal') 
+        Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'});
+      else
+        Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'});
+    
+    Sortable._marker.show();
+  },
+  
+  _tree: function(element, options, parent) {
+    var children = Sortable.findElements(element, options) || [];
+  
+    for (var i = 0; i < children.length; ++i) {
+      var match = children[i].id.match(options.format);
+
+      if (!match) continue;
+      
+      var child = {
+        id: encodeURIComponent(match ? match[1] : null),
+        element: element,
+        parent: parent,
+        children: [],
+        position: parent.children.length,
+        container: $(children[i]).down(options.treeTag)
+      }
+      
+      /* Get the element containing the children and recurse over it */
+      if (child.container)
+        this._tree(child.container, options, child)
+      
+      parent.children.push (child);
+    }
+
+    return parent; 
+  },
+
+  tree: function(element) {
+    element = $(element);
+    var sortableOptions = this.options(element);
+    var options = Object.extend({
+      tag: sortableOptions.tag,
+      treeTag: sortableOptions.treeTag,
+      only: sortableOptions.only,
+      name: element.id,
+      format: sortableOptions.format
+    }, arguments[1] || { });
+    
+    var root = {
+      id: null,
+      parent: null,
+      children: [],
+      container: element,
+      position: 0
+    }
+    
+    return Sortable._tree(element, options, root);
+  },
+
+  /* Construct a [i] index for a particular node */
+  _constructIndex: function(node) {
+    var index = '';
+    do {
+      if (node.id) index = '[' + node.position + ']' + index;
+    } while ((node = node.parent) != null);
+    return index;
+  },
+
+  sequence: function(element) {
+    element = $(element);
+    var options = Object.extend(this.options(element), arguments[1] || { });
+    
+    return $(this.findElements(element, options) || []).map( function(item) {
+      return item.id.match(options.format) ? item.id.match(options.format)[1] : '';
+    });
+  },
+
+  setSequence: function(element, new_sequence) {
+    element = $(element);
+    var options = Object.extend(this.options(element), arguments[2] || { });
+    
+    var nodeMap = { };
+    this.findElements(element, options).each( function(n) {
+        if (n.id.match(options.format))
+            nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode];
+        n.parentNode.removeChild(n);
+    });
+   
+    new_sequence.each(function(ident) {
+      var n = nodeMap[ident];
+      if (n) {
+        n[1].appendChild(n[0]);
+        delete nodeMap[ident];
+      }
+    });
+  },
+  
+  serialize: function(element) {
+    element = $(element);
+    var options = Object.extend(Sortable.options(element), arguments[1] || { });
+    var name = encodeURIComponent(
+      (arguments[1] && arguments[1].name) ? arguments[1].name : element.id);
+    
+    if (options.tree) {
+      return Sortable.tree(element, arguments[1]).children.map( function (item) {
+        return [name + Sortable._constructIndex(item) + "[id]=" + 
+                encodeURIComponent(item.id)].concat(item.children.map(arguments.callee));
+      }).flatten().join('&');
+    } else {
+      return Sortable.sequence(element, arguments[1]).map( function(item) {
+        return name + "[]=" + encodeURIComponent(item);
+      }).join('&');
+    }
+  }
+}
+
+// Returns true if child is contained within element
+Element.isParent = function(child, element) {
+  if (!child.parentNode || child == element) return false;
+  if (child.parentNode == element) return true;
+  return Element.isParent(child.parentNode, element);
+}
+
+Element.findChildren = function(element, only, recursive, tagName) {   
+  if(!element.hasChildNodes()) return null;
+  tagName = tagName.toUpperCase();
+  if(only) only = [only].flatten();
+  var elements = [];
+  $A(element.childNodes).each( function(e) {
+    if(e.tagName && e.tagName.toUpperCase()==tagName &&
+      (!only || (Element.classNames(e).detect(function(v) { return only.include(v) }))))
+        elements.push(e);
+    if(recursive) {
+      var grandchildren = Element.findChildren(e, only, recursive, tagName);
+      if(grandchildren) elements.push(grandchildren);
+    }
+  });
+
+  return (elements.length>0 ? elements.flatten() : []);
+}
+
+Element.offsetSize = function (element, type) {
+  return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')];
+}
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/e-201312.js b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/e-201312.js
new file mode 100644
index 0000000..acf27b8
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/e-201312.js
@@ -0,0 +1,13 @@
+function st_go(a){var i,u=document.location.protocol+'//stats.wordpress.com/g.gif?host='+escape(document.location.host)+'&rand='+Math.random();for(i in a){u=u+'&'+i+'='+escape(a[i]);}u=u+'&ref='+escape(document.referrer);document.open();document.write("<img id=\"wpstats\" src=\""+u+"\" alt=\"\" />");document.close();}
+function wpcomAddEvent(el,ev,fn){var isIE=window.attachEvent?true:false;if(isIE)el.attachEvent('on'+ev,fn);else if(el.addEventListener)el.addEventListener(ev,fn,false);}
+function linkmousedown(event){var isIE=window.attachEvent?true:false;event=event?event:(window.event?window.event:"");var m=isIE?window.event.srcElement:event.currentTarget;m.modo=true;}
+function linkmouseout(event){var isIE=window.attachEvent?true:false;event=event?event:(window.event?window.event:"");var m=isIE?window.event.srcElement:event.currentTarget;m.modo=false;}
+function linkmouseup(event){var isIE=window.attachEvent?true:false;event=event?event:(window.event?window.event:"");var m=isIE?window.event.srcElement:event.currentTarget;if(m.modo)linktracker_record(event);}
+function linkclick(event){var isIE=window.attachEvent?true:false;event=event?event:(window.event?window.event:"");linktracker_record(event);}
+function linktracker_init(b,p){_blog=b;_post=p;if(typeof document.location.host!='undefined')
+var localserver=document.location.host;else
+var localserver=document.location.toString().replace(/^[^\/]*\/+([^\/]*)(\/.*)?/,'$1');var els=document.getElementsByTagName('a');for(var i=0;i<els.length;i++){var href=els[i].href;if(href.match(eval('/^(http(s)?:\\/\\/)?'+localserver+'/')))continue;wpcomAddEvent(els[i],'mousedown',linkmousedown);wpcomAddEvent(els[i],'mouseout',linkmouseout);wpcomAddEvent(els[i],'mouseup',linkmouseup);}}
+function linktracker_record(event){var isIE=window.attachEvent?true:false;event=event?event:(window.event?window.event:"");var b=isIE?window.event.srcElement:event.currentTarget;while(b.nodeName!="A"){if(typeof b.parentNode=='undefined')return;b=b.parentNode;}
+var bh=b.href;var pr=document.location.protocol||'http:';var b=(typeof _blog!='undefined')?_blog:0;var p=(typeof _post!='undefined')?_post:0;var i=new Image(1,1);i.src=pr+'//stats.wordpress.com/c.gif?s=2&b='+b+'&p='+p+'&u='+escape(bh);i.onLoad=function(){cmcVoid();}}
+function cmcVoid(){return;}
+if(typeof _wpdq=="undefined"){var _qevents=_qevents||[];(function(){var elem=document.createElement('script');elem.src=(document.location.protocol=="https:"?"https://secure":"http://edge")+".quantserve.com/quant.js";elem.async=true;elem.type="text/javascript";var scpt=document.getElementsByTagName('script')[0];scpt.parentNode.insertBefore(elem,scpt);})();_qevents.push({qacct:"p-18-mFEk4J448M",labels:"type.wporg"});}
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diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/effects.js b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/effects.js
new file mode 100644
index 0000000..b8c0259
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/effects.js
@@ -0,0 +1,1122 @@
+// script.aculo.us effects.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// Contributors:
+//  Justin Palmer (http://encytemedia.com/)
+//  Mark Pilgrim (http://diveintomark.org/)
+//  Martin Bialasinki
+// 
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/ 
+
+// converts rgb() and #xxx to #xxxxxx format,  
+// returns self (or first argument) if not convertable  
+String.prototype.parseColor = function() {  
+  var color = '#';
+  if (this.slice(0,4) == 'rgb(') {  
+    var cols = this.slice(4,this.length-1).split(',');  
+    var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);  
+  } else {  
+    if (this.slice(0,1) == '#') {  
+      if (this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();  
+      if (this.length==7) color = this.toLowerCase();  
+    }  
+  }  
+  return (color.length==7 ? color : (arguments[0] || this));  
+};
+
+/*--------------------------------------------------------------------------*/
+
+Element.collectTextNodes = function(element) {  
+  return $A($(element).childNodes).collect( function(node) {
+    return (node.nodeType==3 ? node.nodeValue : 
+      (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
+  }).flatten().join('');
+};
+
+Element.collectTextNodesIgnoreClass = function(element, className) {  
+  return $A($(element).childNodes).collect( function(node) {
+    return (node.nodeType==3 ? node.nodeValue : 
+      ((node.hasChildNodes() && !Element.hasClassName(node,className)) ? 
+        Element.collectTextNodesIgnoreClass(node, className) : ''));
+  }).flatten().join('');
+};
+
+Element.setContentZoom = function(element, percent) {
+  element = $(element);  
+  element.setStyle({fontSize: (percent/100) + 'em'});   
+  if (Prototype.Browser.WebKit) window.scrollBy(0,0);
+  return element;
+};
+
+Element.getInlineOpacity = function(element){
+  return $(element).style.opacity || '';
+};
+
+Element.forceRerendering = function(element) {
+  try {
+    element = $(element);
+    var n = document.createTextNode(' ');
+    element.appendChild(n);
+    element.removeChild(n);
+  } catch(e) { }
+};
+
+/*--------------------------------------------------------------------------*/
+
+var Effect = {
+  _elementDoesNotExistError: {
+    name: 'ElementDoesNotExistError',
+    message: 'The specified DOM element does not exist, but is required for this effect to operate'
+  },
+  Transitions: {
+    linear: Prototype.K,
+    sinoidal: function(pos) {
+      return (-Math.cos(pos*Math.PI)/2) + 0.5;
+    },
+    reverse: function(pos) {
+      return 1-pos;
+    },
+    flicker: function(pos) {
+      var pos = ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
+      return pos > 1 ? 1 : pos;
+    },
+    wobble: function(pos) {
+      return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
+    },
+    pulse: function(pos, pulses) { 
+      pulses = pulses || 5; 
+      return (
+        ((pos % (1/pulses)) * pulses).round() == 0 ? 
+              ((pos * pulses * 2) - (pos * pulses * 2).floor()) : 
+          1 - ((pos * pulses * 2) - (pos * pulses * 2).floor())
+        );
+    },
+    spring: function(pos) { 
+      return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6)); 
+    },
+    none: function(pos) {
+      return 0;
+    },
+    full: function(pos) {
+      return 1;
+    }
+  },
+  DefaultOptions: {
+    duration:   1.0,   // seconds
+    fps:        100,   // 100= assume 66fps max.
+    sync:       false, // true for combining
+    from:       0.0,
+    to:         1.0,
+    delay:      0.0,
+    queue:      'parallel'
+  },
+  tagifyText: function(element) {
+    var tagifyStyle = 'position:relative';
+    if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';
+    
+    element = $(element);
+    $A(element.childNodes).each( function(child) {
+      if (child.nodeType==3) {
+        child.nodeValue.toArray().each( function(character) {
+          element.insertBefore(
+            new Element('span', {style: tagifyStyle}).update(
+              character == ' ' ? String.fromCharCode(160) : character), 
+              child);
+        });
+        Element.remove(child);
+      }
+    });
+  },
+  multiple: function(element, effect) {
+    var elements;
+    if (((typeof element == 'object') || 
+        Object.isFunction(element)) && 
+       (element.length))
+      elements = element;
+    else
+      elements = $(element).childNodes;
+      
+    var options = Object.extend({
+      speed: 0.1,
+      delay: 0.0
+    }, arguments[2] || { });
+    var masterDelay = options.delay;
+
+    $A(elements).each( function(element, index) {
+      new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
+    });
+  },
+  PAIRS: {
+    'slide':  ['SlideDown','SlideUp'],
+    'blind':  ['BlindDown','BlindUp'],
+    'appear': ['Appear','Fade']
+  },
+  toggle: function(element, effect) {
+    element = $(element);
+    effect = (effect || 'appear').toLowerCase();
+    var options = Object.extend({
+      queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
+    }, arguments[2] || { });
+    Effect[element.visible() ? 
+      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
+  }
+};
+
+Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;
+
+/* ------------- core effects ------------- */
+
+Effect.ScopedQueue = Class.create(Enumerable, {
+  initialize: function() {
+    this.effects  = [];
+    this.interval = null;    
+  },
+  _each: function(iterator) {
+    this.effects._each(iterator);
+  },
+  add: function(effect) {
+    var timestamp = new Date().getTime();
+    
+    var position = Object.isString(effect.options.queue) ? 
+      effect.options.queue : effect.options.queue.position;
+    
+    switch(position) {
+      case 'front':
+        // move unstarted effects after this effect  
+        this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
+            e.startOn  += effect.finishOn;
+            e.finishOn += effect.finishOn;
+          });
+        break;
+      case 'with-last':
+        timestamp = this.effects.pluck('startOn').max() || timestamp;
+        break;
+      case 'end':
+        // start effect after last queued effect has finished
+        timestamp = this.effects.pluck('finishOn').max() || timestamp;
+        break;
+    }
+    
+    effect.startOn  += timestamp;
+    effect.finishOn += timestamp;
+
+    if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
+      this.effects.push(effect);
+    
+    if (!this.interval)
+      this.interval = setInterval(this.loop.bind(this), 15);
+  },
+  remove: function(effect) {
+    this.effects = this.effects.reject(function(e) { return e==effect });
+    if (this.effects.length == 0) {
+      clearInterval(this.interval);
+      this.interval = null;
+    }
+  },
+  loop: function() {
+    var timePos = new Date().getTime();
+    for(var i=0, len=this.effects.length;i<len;i++) 
+      this.effects[i] && this.effects[i].loop(timePos);
+  }
+});
+
+Effect.Queues = {
+  instances: $H(),
+  get: function(queueName) {
+    if (!Object.isString(queueName)) return queueName;
+    
+    return this.instances.get(queueName) ||
+      this.instances.set(queueName, new Effect.ScopedQueue());
+  }
+};
+Effect.Queue = Effect.Queues.get('global');
+
+Effect.Base = Class.create({
+  position: null,
+  start: function(options) {
+    function codeForEvent(options,eventName){
+      return (
+        (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
+        (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
+      );
+    }
+    if (options && options.transition === false) options.transition = Effect.Transitions.linear;
+    this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
+    this.currentFrame = 0;
+    this.state        = 'idle';
+    this.startOn      = this.options.delay*1000;
+    this.finishOn     = this.startOn+(this.options.duration*1000);
+    this.fromToDelta  = this.options.to-this.options.from;
+    this.totalTime    = this.finishOn-this.startOn;
+    this.totalFrames  = this.options.fps*this.options.duration;
+    
+    eval('this.render = function(pos){ '+
+      'if (this.state=="idle"){this.state="running";'+
+      codeForEvent(this.options,'beforeSetup')+
+      (this.setup ? 'this.setup();':'')+ 
+      codeForEvent(this.options,'afterSetup')+
+      '};if (this.state=="running"){'+
+      'pos=this.options.transition(pos)*'+this.fromToDelta+'+'+this.options.from+';'+
+      'this.position=pos;'+
+      codeForEvent(this.options,'beforeUpdate')+
+      (this.update ? 'this.update(pos);':'')+
+      codeForEvent(this.options,'afterUpdate')+
+      '}}');
+    
+    this.event('beforeStart');
+    if (!this.options.sync)
+      Effect.Queues.get(Object.isString(this.options.queue) ? 
+        'global' : this.options.queue.scope).add(this);
+  },
+  loop: function(timePos) {
+    if (timePos >= this.startOn) {
+      if (timePos >= this.finishOn) {
+        this.render(1.0);
+        this.cancel();
+        this.event('beforeFinish');
+        if (this.finish) this.finish(); 
+        this.event('afterFinish');
+        return;  
+      }
+      var pos   = (timePos - this.startOn) / this.totalTime,
+          frame = (pos * this.totalFrames).round();
+      if (frame > this.currentFrame) {
+        this.render(pos);
+        this.currentFrame = frame;
+      }
+    }
+  },
+  cancel: function() {
+    if (!this.options.sync)
+      Effect.Queues.get(Object.isString(this.options.queue) ? 
+        'global' : this.options.queue.scope).remove(this);
+    this.state = 'finished';
+  },
+  event: function(eventName) {
+    if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
+    if (this.options[eventName]) this.options[eventName](this);
+  },
+  inspect: function() {
+    var data = $H();
+    for(property in this)
+      if (!Object.isFunction(this[property])) data.set(property, this[property]);
+    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
+  }
+});
+
+Effect.Parallel = Class.create(Effect.Base, {
+  initialize: function(effects) {
+    this.effects = effects || [];
+    this.start(arguments[1]);
+  },
+  update: function(position) {
+    this.effects.invoke('render', position);
+  },
+  finish: function(position) {
+    this.effects.each( function(effect) {
+      effect.render(1.0);
+      effect.cancel();
+      effect.event('beforeFinish');
+      if (effect.finish) effect.finish(position);
+      effect.event('afterFinish');
+    });
+  }
+});
+
+Effect.Tween = Class.create(Effect.Base, {
+  initialize: function(object, from, to) {
+    object = Object.isString(object) ? $(object) : object;
+    var args = $A(arguments), method = args.last(), 
+      options = args.length == 5 ? args[3] : null;
+    this.method = Object.isFunction(method) ? method.bind(object) :
+      Object.isFunction(object[method]) ? object[method].bind(object) : 
+      function(value) { object[method] = value };
+    this.start(Object.extend({ from: from, to: to }, options || { }));
+  },
+  update: function(position) {
+    this.method(position);
+  }
+});
+
+Effect.Event = Class.create(Effect.Base, {
+  initialize: function() {
+    this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
+  },
+  update: Prototype.emptyFunction
+});
+
+Effect.Opacity = Class.create(Effect.Base, {
+  initialize: function(element) {
+    this.element = $(element);
+    if (!this.element) throw(Effect._elementDoesNotExistError);
+    // make this work on IE on elements without 'layout'
+    if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
+      this.element.setStyle({zoom: 1});
+    var options = Object.extend({
+      from: this.element.getOpacity() || 0.0,
+      to:   1.0
+    }, arguments[1] || { });
+    this.start(options);
+  },
+  update: function(position) {
+    this.element.setOpacity(position);
+  }
+});
+
+Effect.Move = Class.create(Effect.Base, {
+  initialize: function(element) {
+    this.element = $(element);
+    if (!this.element) throw(Effect._elementDoesNotExistError);
+    var options = Object.extend({
+      x:    0,
+      y:    0,
+      mode: 'relative'
+    }, arguments[1] || { });
+    this.start(options);
+  },
+  setup: function() {
+    this.element.makePositioned();
+    this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
+    this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
+    if (this.options.mode == 'absolute') {
+      this.options.x = this.options.x - this.originalLeft;
+      this.options.y = this.options.y - this.originalTop;
+    }
+  },
+  update: function(position) {
+    this.element.setStyle({
+      left: (this.options.x  * position + this.originalLeft).round() + 'px',
+      top:  (this.options.y  * position + this.originalTop).round()  + 'px'
+    });
+  }
+});
+
+// for backwards compatibility
+Effect.MoveBy = function(element, toTop, toLeft) {
+  return new Effect.Move(element, 
+    Object.extend({ x: toLeft, y: toTop }, arguments[3] || { }));
+};
+
+Effect.Scale = Class.create(Effect.Base, {
+  initialize: function(element, percent) {
+    this.element = $(element);
+    if (!this.element) throw(Effect._elementDoesNotExistError);
+    var options = Object.extend({
+      scaleX: true,
+      scaleY: true,
+      scaleContent: true,
+      scaleFromCenter: false,
+      scaleMode: 'box',        // 'box' or 'contents' or { } with provided values
+      scaleFrom: 100.0,
+      scaleTo:   percent
+    }, arguments[2] || { });
+    this.start(options);
+  },
+  setup: function() {
+    this.restoreAfterFinish = this.options.restoreAfterFinish || false;
+    this.elementPositioning = this.element.getStyle('position');
+    
+    this.originalStyle = { };
+    ['top','left','width','height','fontSize'].each( function(k) {
+      this.originalStyle[k] = this.element.style[k];
+    }.bind(this));
+      
+    this.originalTop  = this.element.offsetTop;
+    this.originalLeft = this.element.offsetLeft;
+    
+    var fontSize = this.element.getStyle('font-size') || '100%';
+    ['em','px','%','pt'].each( function(fontSizeType) {
+      if (fontSize.indexOf(fontSizeType)>0) {
+        this.fontSize     = parseFloat(fontSize);
+        this.fontSizeType = fontSizeType;
+      }
+    }.bind(this));
+    
+    this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
+    
+    this.dims = null;
+    if (this.options.scaleMode=='box')
+      this.dims = [this.element.offsetHeight, this.element.offsetWidth];
+    if (/^content/.test(this.options.scaleMode))
+      this.dims = [this.element.scrollHeight, this.element.scrollWidth];
+    if (!this.dims)
+      this.dims = [this.options.scaleMode.originalHeight,
+                   this.options.scaleMode.originalWidth];
+  },
+  update: function(position) {
+    var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
+    if (this.options.scaleContent && this.fontSize)
+      this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
+    this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
+  },
+  finish: function(position) {
+    if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
+  },
+  setDimensions: function(height, width) {
+    var d = { };
+    if (this.options.scaleX) d.width = width.round() + 'px';
+    if (this.options.scaleY) d.height = height.round() + 'px';
+    if (this.options.scaleFromCenter) {
+      var topd  = (height - this.dims[0])/2;
+      var leftd = (width  - this.dims[1])/2;
+      if (this.elementPositioning == 'absolute') {
+        if (this.options.scaleY) d.top = this.originalTop-topd + 'px';
+        if (this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
+      } else {
+        if (this.options.scaleY) d.top = -topd + 'px';
+        if (this.options.scaleX) d.left = -leftd + 'px';
+      }
+    }
+    this.element.setStyle(d);
+  }
+});
+
+Effect.Highlight = Class.create(Effect.Base, {
+  initialize: function(element) {
+    this.element = $(element);
+    if (!this.element) throw(Effect._elementDoesNotExistError);
+    var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
+    this.start(options);
+  },
+  setup: function() {
+    // Prevent executing on elements not in the layout flow
+    if (this.element.getStyle('display')=='none') { this.cancel(); return; }
+    // Disable background image during the effect
+    this.oldStyle = { };
+    if (!this.options.keepBackgroundImage) {
+      this.oldStyle.backgroundImage = this.element.getStyle('background-image');
+      this.element.setStyle({backgroundImage: 'none'});
+    }
+    if (!this.options.endcolor)
+      this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
+    if (!this.options.restorecolor)
+      this.options.restorecolor = this.element.getStyle('background-color');
+    // init color calculations
+    this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
+    this._delta = $R(0,2).map(function(i){ return parseInt(this.options.endcolor.slice(i*2+1,i*2+3),16)-this._base[i] }.bind(this));
+  },
+  update: function(position) {
+    this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
+      return m+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
+  },
+  finish: function() {
+    this.element.setStyle(Object.extend(this.oldStyle, {
+      backgroundColor: this.options.restorecolor
+    }));
+  }
+});
+
+Effect.ScrollTo = function(element) {
+  var options = arguments[1] || { },
+    scrollOffsets = document.viewport.getScrollOffsets(),
+    elementOffsets = $(element).cumulativeOffset(),
+    max = (window.height || document.body.scrollHeight) - document.viewport.getHeight();  
+
+  if (options.offset) elementOffsets[1] += options.offset;
+
+  return new Effect.Tween(null,
+    scrollOffsets.top,
+    elementOffsets[1] > max ? max : elementOffsets[1],
+    options,
+    function(p){ scrollTo(scrollOffsets.left, p.round()) }
+  );
+};
+
+/* ------------- combination effects ------------- */
+
+Effect.Fade = function(element) {
+  element = $(element);
+  var oldOpacity = element.getInlineOpacity();
+  var options = Object.extend({
+    from: element.getOpacity() || 1.0,
+    to:   0.0,
+    afterFinishInternal: function(effect) { 
+      if (effect.options.to!=0) return;
+      effect.element.hide().setStyle({opacity: oldOpacity}); 
+    }
+  }, arguments[1] || { });
+  return new Effect.Opacity(element,options);
+};
+
+Effect.Appear = function(element) {
+  element = $(element);
+  var options = Object.extend({
+  from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
+  to:   1.0,
+  // force Safari to render floated elements properly
+  afterFinishInternal: function(effect) {
+    effect.element.forceRerendering();
+  },
+  beforeSetup: function(effect) {
+    effect.element.setOpacity(effect.options.from).show(); 
+  }}, arguments[1] || { });
+  return new Effect.Opacity(element,options);
+};
+
+Effect.Puff = function(element) {
+  element = $(element);
+  var oldStyle = { 
+    opacity: element.getInlineOpacity(), 
+    position: element.getStyle('position'),
+    top:  element.style.top,
+    left: element.style.left,
+    width: element.style.width,
+    height: element.style.height
+  };
+  return new Effect.Parallel(
+   [ new Effect.Scale(element, 200, 
+      { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }), 
+     new Effect.Opacity(element, { sync: true, to: 0.0 } ) ], 
+     Object.extend({ duration: 1.0, 
+      beforeSetupInternal: function(effect) {
+        Position.absolutize(effect.effects[0].element)
+      },
+      afterFinishInternal: function(effect) {
+         effect.effects[0].element.hide().setStyle(oldStyle); }
+     }, arguments[1] || { })
+   );
+};
+
+Effect.BlindUp = function(element) {
+  element = $(element);
+  element.makeClipping();
+  return new Effect.Scale(element, 0,
+    Object.extend({ scaleContent: false, 
+      scaleX: false, 
+      restoreAfterFinish: true,
+      afterFinishInternal: function(effect) {
+        effect.element.hide().undoClipping();
+      } 
+    }, arguments[1] || { })
+  );
+};
+
+Effect.BlindDown = function(element) {
+  element = $(element);
+  var elementDimensions = element.getDimensions();
+  return new Effect.Scale(element, 100, Object.extend({ 
+    scaleContent: false, 
+    scaleX: false,
+    scaleFrom: 0,
+    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
+    restoreAfterFinish: true,
+    afterSetup: function(effect) {
+      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
+    },  
+    afterFinishInternal: function(effect) {
+      effect.element.undoClipping();
+    }
+  }, arguments[1] || { }));
+};
+
+Effect.SwitchOff = function(element) {
+  element = $(element);
+  var oldOpacity = element.getInlineOpacity();
+  return new Effect.Appear(element, Object.extend({
+    duration: 0.4,
+    from: 0,
+    transition: Effect.Transitions.flicker,
+    afterFinishInternal: function(effect) {
+      new Effect.Scale(effect.element, 1, { 
+        duration: 0.3, scaleFromCenter: true,
+        scaleX: false, scaleContent: false, restoreAfterFinish: true,
+        beforeSetup: function(effect) { 
+          effect.element.makePositioned().makeClipping();
+        },
+        afterFinishInternal: function(effect) {
+          effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
+        }
+      })
+    }
+  }, arguments[1] || { }));
+};
+
+Effect.DropOut = function(element) {
+  element = $(element);
+  var oldStyle = {
+    top: element.getStyle('top'),
+    left: element.getStyle('left'),
+    opacity: element.getInlineOpacity() };
+  return new Effect.Parallel(
+    [ new Effect.Move(element, {x: 0, y: 100, sync: true }), 
+      new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
+    Object.extend(
+      { duration: 0.5,
+        beforeSetup: function(effect) {
+          effect.effects[0].element.makePositioned(); 
+        },
+        afterFinishInternal: function(effect) {
+          effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
+        } 
+      }, arguments[1] || { }));
+};
+
+Effect.Shake = function(element) {
+  element = $(element);
+  var options = Object.extend({
+    distance: 20,
+    duration: 0.5
+  }, arguments[1] || {});
+  var distance = parseFloat(options.distance);
+  var split = parseFloat(options.duration) / 10.0;
+  var oldStyle = {
+    top: element.getStyle('top'),
+    left: element.getStyle('left') };
+    return new Effect.Move(element,
+      { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
+        effect.element.undoPositioned().setStyle(oldStyle);
+  }}) }}) }}) }}) }}) }});
+};
+
+Effect.SlideDown = function(element) {
+  element = $(element).cleanWhitespace();
+  // SlideDown need to have the content of the element wrapped in a container element with fixed height!
+  var oldInnerBottom = element.down().getStyle('bottom');
+  var elementDimensions = element.getDimensions();
+  return new Effect.Scale(element, 100, Object.extend({ 
+    scaleContent: false, 
+    scaleX: false, 
+    scaleFrom: window.opera ? 0 : 1,
+    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
+    restoreAfterFinish: true,
+    afterSetup: function(effect) {
+      effect.element.makePositioned();
+      effect.element.down().makePositioned();
+      if (window.opera) effect.element.setStyle({top: ''});
+      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
+    },
+    afterUpdateInternal: function(effect) {
+      effect.element.down().setStyle({bottom:
+        (effect.dims[0] - effect.element.clientHeight) + 'px' }); 
+    },
+    afterFinishInternal: function(effect) {
+      effect.element.undoClipping().undoPositioned();
+      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
+    }, arguments[1] || { })
+  );
+};
+
+Effect.SlideUp = function(element) {
+  element = $(element).cleanWhitespace();
+  var oldInnerBottom = element.down().getStyle('bottom');
+  var elementDimensions = element.getDimensions();
+  return new Effect.Scale(element, window.opera ? 0 : 1,
+   Object.extend({ scaleContent: false, 
+    scaleX: false, 
+    scaleMode: 'box',
+    scaleFrom: 100,
+    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
+    restoreAfterFinish: true,
+    afterSetup: function(effect) {
+      effect.element.makePositioned();
+      effect.element.down().makePositioned();
+      if (window.opera) effect.element.setStyle({top: ''});
+      effect.element.makeClipping().show();
+    },  
+    afterUpdateInternal: function(effect) {
+      effect.element.down().setStyle({bottom:
+        (effect.dims[0] - effect.element.clientHeight) + 'px' });
+    },
+    afterFinishInternal: function(effect) {
+      effect.element.hide().undoClipping().undoPositioned();
+      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
+    }
+   }, arguments[1] || { })
+  );
+};
+
+// Bug in opera makes the TD containing this element expand for a instance after finish 
+Effect.Squish = function(element) {
+  return new Effect.Scale(element, window.opera ? 1 : 0, { 
+    restoreAfterFinish: true,
+    beforeSetup: function(effect) {
+      effect.element.makeClipping(); 
+    },  
+    afterFinishInternal: function(effect) {
+      effect.element.hide().undoClipping(); 
+    }
+  });
+};
+
+Effect.Grow = function(element) {
+  element = $(element);
+  var options = Object.extend({
+    direction: 'center',
+    moveTransition: Effect.Transitions.sinoidal,
+    scaleTransition: Effect.Transitions.sinoidal,
+    opacityTransition: Effect.Transitions.full
+  }, arguments[1] || { });
+  var oldStyle = {
+    top: element.style.top,
+    left: element.style.left,
+    height: element.style.height,
+    width: element.style.width,
+    opacity: element.getInlineOpacity() };
+
+  var dims = element.getDimensions();    
+  var initialMoveX, initialMoveY;
+  var moveX, moveY;
+  
+  switch (options.direction) {
+    case 'top-left':
+      initialMoveX = initialMoveY = moveX = moveY = 0; 
+      break;
+    case 'top-right':
+      initialMoveX = dims.width;
+      initialMoveY = moveY = 0;
+      moveX = -dims.width;
+      break;
+    case 'bottom-left':
+      initialMoveX = moveX = 0;
+      initialMoveY = dims.height;
+      moveY = -dims.height;
+      break;
+    case 'bottom-right':
+      initialMoveX = dims.width;
+      initialMoveY = dims.height;
+      moveX = -dims.width;
+      moveY = -dims.height;
+      break;
+    case 'center':
+      initialMoveX = dims.width / 2;
+      initialMoveY = dims.height / 2;
+      moveX = -dims.width / 2;
+      moveY = -dims.height / 2;
+      break;
+  }
+  
+  return new Effect.Move(element, {
+    x: initialMoveX,
+    y: initialMoveY,
+    duration: 0.01, 
+    beforeSetup: function(effect) {
+      effect.element.hide().makeClipping().makePositioned();
+    },
+    afterFinishInternal: function(effect) {
+      new Effect.Parallel(
+        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
+          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
+          new Effect.Scale(effect.element, 100, {
+            scaleMode: { originalHeight: dims.height, originalWidth: dims.width }, 
+            sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
+        ], Object.extend({
+             beforeSetup: function(effect) {
+               effect.effects[0].element.setStyle({height: '0px'}).show(); 
+             },
+             afterFinishInternal: function(effect) {
+               effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle); 
+             }
+           }, options)
+      )
+    }
+  });
+};
+
+Effect.Shrink = function(element) {
+  element = $(element);
+  var options = Object.extend({
+    direction: 'center',
+    moveTransition: Effect.Transitions.sinoidal,
+    scaleTransition: Effect.Transitions.sinoidal,
+    opacityTransition: Effect.Transitions.none
+  }, arguments[1] || { });
+  var oldStyle = {
+    top: element.style.top,
+    left: element.style.left,
+    height: element.style.height,
+    width: element.style.width,
+    opacity: element.getInlineOpacity() };
+
+  var dims = element.getDimensions();
+  var moveX, moveY;
+  
+  switch (options.direction) {
+    case 'top-left':
+      moveX = moveY = 0;
+      break;
+    case 'top-right':
+      moveX = dims.width;
+      moveY = 0;
+      break;
+    case 'bottom-left':
+      moveX = 0;
+      moveY = dims.height;
+      break;
+    case 'bottom-right':
+      moveX = dims.width;
+      moveY = dims.height;
+      break;
+    case 'center':  
+      moveX = dims.width / 2;
+      moveY = dims.height / 2;
+      break;
+  }
+  
+  return new Effect.Parallel(
+    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
+      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
+      new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
+    ], Object.extend({            
+         beforeStartInternal: function(effect) {
+           effect.effects[0].element.makePositioned().makeClipping(); 
+         },
+         afterFinishInternal: function(effect) {
+           effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
+       }, options)
+  );
+};
+
+Effect.Pulsate = function(element) {
+  element = $(element);
+  var options    = arguments[1] || { };
+  var oldOpacity = element.getInlineOpacity();
+  var transition = options.transition || Effect.Transitions.sinoidal;
+  var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos, options.pulses)) };
+  reverser.bind(transition);
+  return new Effect.Opacity(element, 
+    Object.extend(Object.extend({  duration: 2.0, from: 0,
+      afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
+    }, options), {transition: reverser}));
+};
+
+Effect.Fold = function(element) {
+  element = $(element);
+  var oldStyle = {
+    top: element.style.top,
+    left: element.style.left,
+    width: element.style.width,
+    height: element.style.height };
+  element.makeClipping();
+  return new Effect.Scale(element, 5, Object.extend({   
+    scaleContent: false,
+    scaleX: false,
+    afterFinishInternal: function(effect) {
+    new Effect.Scale(element, 1, { 
+      scaleContent: false, 
+      scaleY: false,
+      afterFinishInternal: function(effect) {
+        effect.element.hide().undoClipping().setStyle(oldStyle);
+      } });
+  }}, arguments[1] || { }));
+};
+
+Effect.Morph = Class.create(Effect.Base, {
+  initialize: function(element) {
+    this.element = $(element);
+    if (!this.element) throw(Effect._elementDoesNotExistError);
+    var options = Object.extend({
+      style: { }
+    }, arguments[1] || { });
+    
+    if (!Object.isString(options.style)) this.style = $H(options.style);
+    else {
+      if (options.style.include(':'))
+        this.style = options.style.parseStyle();
+      else {
+        this.element.addClassName(options.style);
+        this.style = $H(this.element.getStyles());
+        this.element.removeClassName(options.style);
+        var css = this.element.getStyles();
+        this.style = this.style.reject(function(style) {
+          return style.value == css[style.key];
+        });
+        options.afterFinishInternal = function(effect) {
+          effect.element.addClassName(effect.options.style);
+          effect.transforms.each(function(transform) {
+            effect.element.style[transform.style] = '';
+          });
+        }
+      }
+    }
+    this.start(options);
+  },
+  
+  setup: function(){
+    function parseColor(color){
+      if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
+      color = color.parseColor();
+      return $R(0,2).map(function(i){
+        return parseInt( color.slice(i*2+1,i*2+3), 16 ) 
+      });
+    }
+    this.transforms = this.style.map(function(pair){
+      var property = pair[0], value = pair[1], unit = null;
+
+      if (value.parseColor('#zzzzzz') != '#zzzzzz') {
+        value = value.parseColor();
+        unit  = 'color';
+      } else if (property == 'opacity') {
+        value = parseFloat(value);
+        if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
+          this.element.setStyle({zoom: 1});
+      } else if (Element.CSS_LENGTH.test(value)) {
+          var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
+          value = parseFloat(components[1]);
+          unit = (components.length == 3) ? components[2] : null;
+      }
+
+      var originalValue = this.element.getStyle(property);
+      return { 
+        style: property.camelize(), 
+        originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0), 
+        targetValue: unit=='color' ? parseColor(value) : value,
+        unit: unit
+      };
+    }.bind(this)).reject(function(transform){
+      return (
+        (transform.originalValue == transform.targetValue) ||
+        (
+          transform.unit != 'color' &&
+          (isNaN(transform.originalValue) || isNaN(transform.targetValue))
+        )
+      )
+    });
+  },
+  update: function(position) {
+    var style = { }, transform, i = this.transforms.length;
+    while(i--)
+      style[(transform = this.transforms[i]).style] = 
+        transform.unit=='color' ? '#'+
+          (Math.round(transform.originalValue[0]+
+            (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
+          (Math.round(transform.originalValue[1]+
+            (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
+          (Math.round(transform.originalValue[2]+
+            (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
+        (transform.originalValue +
+          (transform.targetValue - transform.originalValue) * position).toFixed(3) + 
+            (transform.unit === null ? '' : transform.unit);
+    this.element.setStyle(style, true);
+  }
+});
+
+Effect.Transform = Class.create({
+  initialize: function(tracks){
+    this.tracks  = [];
+    this.options = arguments[1] || { };
+    this.addTracks(tracks);
+  },
+  addTracks: function(tracks){
+    tracks.each(function(track){
+      track = $H(track);
+      var data = track.values().first();
+      this.tracks.push($H({
+        ids:     track.keys().first(),
+        effect:  Effect.Morph,
+        options: { style: data }
+      }));
+    }.bind(this));
+    return this;
+  },
+  play: function(){
+    return new Effect.Parallel(
+      this.tracks.map(function(track){
+        var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
+        var elements = [$(ids) || $$(ids)].flatten();
+        return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
+      }).flatten(),
+      this.options
+    );
+  }
+});
+
+Element.CSS_PROPERTIES = $w(
+  'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' + 
+  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
+  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
+  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
+  'fontSize fontWeight height left letterSpacing lineHeight ' +
+  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
+  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
+  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
+  'right textIndent top width wordSpacing zIndex');
+  
+Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;
+
+String.__parseStyleElement = document.createElement('div');
+String.prototype.parseStyle = function(){
+  var style, styleRules = $H();
+  if (Prototype.Browser.WebKit)
+    style = new Element('div',{style:this}).style;
+  else {
+    String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
+    style = String.__parseStyleElement.childNodes[0].style;
+  }
+  
+  Element.CSS_PROPERTIES.each(function(property){
+    if (style[property]) styleRules.set(property, style[property]); 
+  });
+  
+  if (Prototype.Browser.IE && this.include('opacity'))
+    styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);
+
+  return styleRules;
+};
+
+if (document.defaultView && document.defaultView.getComputedStyle) {
+  Element.getStyles = function(element) {
+    var css = document.defaultView.getComputedStyle($(element), null);
+    return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
+      styles[property] = css[property];
+      return styles;
+    });
+  };
+} else {
+  Element.getStyles = function(element) {
+    element = $(element);
+    var css = element.currentStyle, styles;
+    styles = Element.CSS_PROPERTIES.inject({ }, function(results, property) {
+      results[property] = css[property];
+      return results;
+    });
+    if (!styles.opacity) styles.opacity = element.getOpacity();
+    return styles;
+  };
+};
+
+Effect.Methods = {
+  morph: function(element, style) {
+    element = $(element);
+    new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
+    return element;
+  },
+  visualEffect: function(element, effect, options) {
+    element = $(element)
+    var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
+    new Effect[klass](element, options);
+    return element;
+  },
+  highlight: function(element, options) {
+    element = $(element);
+    new Effect.Highlight(element, options);
+    return element;
+  }
+};
+
+$w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
+  'pulsate shake puff squish switchOff dropOut').each(
+  function(effect) { 
+    Effect.Methods[effect] = function(element, options){
+      element = $(element);
+      Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
+      return element;
+    }
+  }
+);
+
+$w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each( 
+  function(f) { Effect.Methods[f] = Element[f]; }
+);
+
+Element.addMethods(Effect.Methods);
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/footer_link2.gif b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/footer_link2.gif
new file mode 100644
index 0000000..fa223b6
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/footer_link2.gif
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/logo.jpg b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/logo.jpg
new file mode 100644
index 0000000..319bb51
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/logo.jpg
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/moo.js b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/moo.js
new file mode 100644
index 0000000..d70a1e4
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/moo.js
@@ -0,0 +1,133 @@
+/*
+moo.fx, simple effects library built with prototype.js (http://prototype.conio.net).
+by Valerio Proietti (http://mad4milk.net) MIT-style LICENSE.
+for more info (http://moofx.mad4milk.net).
+Sunday, March 05, 2006
+v 1.2.3
+*/
+
+var fx = new Object();
+//base
+fx.Base = function(){};
+fx.Base.prototype = {
+	setOptions: function(options) {
+	this.options = {
+		duration: 500,
+		onComplete: '',
+		transition: fx.sinoidal
+	}
+	Object.extend(this.options, options || {});
+	},
+
+	step: function() {
+		var time  = (new Date).getTime();
+		if (time >= this.options.duration+this.startTime) {
+			this.now = this.to;
+			clearInterval (this.timer);
+			this.timer = null;
+			if (this.options.onComplete) setTimeout(this.options.onComplete.bind(this), 10);
+		}
+		else {
+			var Tpos = (time - this.startTime) / (this.options.duration);
+			this.now = this.options.transition(Tpos) * (this.to-this.from) + this.from;
+		}
+		this.increase();
+	},
+
+	custom: function(from, to) {
+		if (this.timer != null) return;
+		this.from = from;
+		this.to = to;
+		this.startTime = (new Date).getTime();
+		this.timer = setInterval (this.step.bind(this), 13);
+	},
+
+	hide: function() {
+		this.now = 0;
+		this.increase();
+	},
+
+	clearTimer: function() {
+		clearInterval(this.timer);
+		this.timer = null;
+	}
+}
+
+//stretchers
+fx.Layout = Class.create();
+fx.Layout.prototype = Object.extend(new fx.Base(), {
+	initialize: function(el, options) {
+		this.el = $(el);
+		this.el.style.overflow = "hidden";
+		this.iniWidth = this.el.offsetWidth;
+		this.iniHeight = this.el.offsetHeight;
+		this.setOptions(options);
+	}
+});
+
+fx.Height = Class.create();
+Object.extend(Object.extend(fx.Height.prototype, fx.Layout.prototype), {	
+	increase: function() {
+		this.el.style.height = this.now + "px";
+	},
+
+	toggle: function() {
+		if (this.el.offsetHeight > 0) this.custom(this.el.offsetHeight, 0);
+		else this.custom(0, this.el.scrollHeight);
+	}
+});
+
+fx.Width = Class.create();
+Object.extend(Object.extend(fx.Width.prototype, fx.Layout.prototype), {	
+	increase: function() {
+		this.el.style.width = this.now + "px";
+	},
+
+	toggle: function(){
+		if (this.el.offsetWidth > 0) this.custom(this.el.offsetWidth, 0);
+		else this.custom(0, this.iniWidth);
+	}
+});
+
+//fader
+fx.Opacity = Class.create();
+fx.Opacity.prototype = Object.extend(new fx.Base(), {
+	initialize: function(el, options) {
+		this.el = $(el);
+		this.now = 1;
+		this.increase();
+		this.setOptions(options);
+	},
+
+	increase: function() {
+		if (this.now == 1 && (/Firefox/.test(navigator.userAgent))) this.now = 0.9999;
+		this.setOpacity(this.now);
+	},
+	
+	setOpacity: function(opacity) {
+		if (opacity == 0 && this.el.style.visibility != "hidden") this.el.style.visibility = "hidden";
+		else if (this.el.style.visibility != "visible") this.el.style.visibility = "visible";
+		if (window.ActiveXObject) this.el.style.filter = "alpha(opacity=" + opacity*100 + ")";
+		this.el.style.opacity = opacity;
+	},
+
+	toggle: function() {
+		if (this.now > 0) this.custom(1, 0);
+		else this.custom(0, 1);
+	}
+});
+
+//transitions
+fx.sinoidal = function(pos){
+	return ((-Math.cos(pos*Math.PI)/2) + 0.5);
+	//this transition is from script.aculo.us
+}
+fx.linear = function(pos){
+	return pos;
+}
+fx.cubic = function(pos){
+	return Math.pow(pos, 3);
+}
+fx.circ = function(pos){
+	return Math.sqrt(pos);
+}
\ No newline at end of file
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/noscript.html b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/noscript.html
new file mode 100644
index 0000000..22915a6
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/noscript.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+<title>reCAPTCHA ????????????</title></head>
+<body><p>?????????????????????????????????????????????????????????? JavaScript?</p>
+<form action="" method="POST"><input name="recaptcha_challenge_field" id="recaptcha_challenge_field" value="03AHJ_VuspiJGr5acUHcvq1DKsd4DQb2FrJC6cZQnQ6raX783ZYuaqcipSP2IoKydZm5uHupndnO-FBhASh0L_gxGj_2Z-UOwMeKH3C1TDb1UZ1arOKwGbpcmEro3c9SNmMGllDHo5OKPlyIDee67Er7QO-Mqasb2rm29DwKV650vewNdW9XoSO0o" type="hidden">
+<center><img alt="" src="noscript_data/image.jpg" height="57" width="300"></center>
+<div class="recaptcha_input_area"><label for="recaptcha_response_field">????????</label></div>
+<div><input name="recaptcha_response_field" id="recaptcha_response_field" autocomplete="off" type="text"></div>
+<div><a href="http://api.recaptcha.net/noscript?k=6LeHWwAAAAAAAC5Fs-j9puLX-bLoF6zF_i91c6Vq&amp;is_audio=false">???????</a>
+<a href="http://api.recaptcha.net/noscript?k=6LeHWwAAAAAAAC5Fs-j9puLX-bLoF6zF_i91c6Vq&amp;is_audio=true">????????</a>
+<a href="http://www.google.com/recaptcha/help?c=03AHJ_VuspiJGr5acUHcvq1DKsd4DQb2FrJC6cZQnQ6raX783ZYuaqcipSP2IoKydZm5uHupndnO-FBhASh0L_gxGj_2Z-UOwMeKH3C1TDb1UZ1arOKwGbpcmEro3c9SNmMGllDHo5OKPlyIDee67Er7QO-Mqasb2rm29DwKV650vewNdW9XoSO0o&amp;hl=zh-CN" target="_blank">??</a></div>
+<div><input name="submit" value="????" type="submit"></div></form></body></html>
\ No newline at end of file
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/noscript_data/image.jpg b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/noscript_data/image.jpg
new file mode 100644
index 0000000..3ee4331
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/noscript_data/image.jpg
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/prototype.js b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/prototype.js
new file mode 100644
index 0000000..69ae7f7
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/prototype.js
@@ -0,0 +1,131 @@
+/*  Prototype JavaScript framework
+ *  (c) 2005 Sam Stephenson <sam@conio.net>
+ *  Prototype is freely distributable under the terms of an MIT-style license.
+ *  For details, see the Prototype web site: http://prototype.conio.net/
+/*--------------------------------------------------------------------------*/
+
+//note: modified & stripped down version of prototype, to be used with moo.fx by mad4milk (http://moofx.mad4milk.net).
+
+var Class = {
+	create: function() {
+		return function() {
+			this.initialize.apply(this, arguments);
+		}
+	}
+}
+
+Object.extend = function(destination, source) {
+	for (property in source) destination[property] = source[property];
+	return destination;
+}
+
+Function.prototype.bind = function(object) {
+	var __method = this;
+	return function() {
+		return __method.apply(object, arguments);
+	}
+}
+
+Function.prototype.bindAsEventListener = function(object) {
+var __method = this;
+	return function(event) {
+		__method.call(object, event || window.event);
+	}
+}
+
+function $() {
+	if (arguments.length == 1) return get$(arguments[0]);
+	var elements = [];
+	$c(arguments).each(function(el){
+		elements.push(get$(el));
+	});
+	return elements;
+
+	function get$(el){
+		if (typeof el == 'string') el = document.getElementById(el);
+		return el;
+	}
+}
+
+if (!window.Element) var Element = new Object();
+
+Object.extend(Element, {
+	remove: function(element) {
+		element = $(element);
+		element.parentNode.removeChild(element);
+	},
+
+	hasClassName: function(element, className) {
+		element = $(element);
+		if (!element) return;
+		var hasClass = false;
+		element.className.split(' ').each(function(cn){
+			if (cn == className) hasClass = true;
+		});
+		return hasClass;
+	},
+
+	addClassName: function(element, className) {
+		element = $(element);
+		Element.removeClassName(element, className);
+		element.className += ' ' + className;
+	},
+  
+	removeClassName: function(element, className) {
+		element = $(element);
+		if (!element) return;
+		var newClassName = '';
+		element.className.split(' ').each(function(cn, i){
+			if (cn != className){
+				if (i > 0) newClassName += ' ';
+				newClassName += cn;
+			}
+		});
+		element.className = newClassName;
+	},
+
+	cleanWhitespace: function(element) {
+		element = $(element);
+		$c(element.childNodes).each(function(node){
+			if (node.nodeType == 3 && !/\S/.test(node.nodeValue)) Element.remove(node);
+		});
+	},
+
+	find: function(element, what) {
+		element = $(element)[what];
+		while (element.nodeType != 1) element = element[what];
+		return element;
+	}
+});
+
+var Position = {
+	cumulativeOffset: function(element) {
+		var valueT = 0, valueL = 0;
+		do {
+			valueT += element.offsetTop  || 0;
+			valueL += element.offsetLeft || 0;
+			element = element.offsetParent;
+		} while (element);
+		return [valueL, valueT];
+	}
+};
+
+document.getElementsByClassName = function(className) {
+	var children = document.getElementsByTagName('*') || document.all;
+	var elements = [];
+	$c(children).each(function(child){
+		if (Element.hasClassName(child, className)) elements.push(child);
+	});  
+	return elements;
+}
+
+//useful array functions
+Array.prototype.each = function(func){
+	for(var i=0;ob=this[i];i++) func(ob, i);
+}
+
+function $c(array){
+	var nArray = [];
+	for (i=0;el=array[i];i++) nArray.push(el);
+	return nArray;
+}
\ No newline at end of file
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/prototype_002.js b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/prototype_002.js
new file mode 100644
index 0000000..2c70b8a
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/prototype_002.js
@@ -0,0 +1,4221 @@
+/*  Prototype JavaScript framework, version 1.6.0.2
+ *  (c) 2005-2008 Sam Stephenson
+ *
+ *  Prototype is freely distributable under the terms of an MIT-style license.
+ *  For details, see the Prototype web site: http://www.prototypejs.org/
+ *
+ *--------------------------------------------------------------------------*/
+
+var Prototype = {
+  Version: '1.6.0.2',
+
+  Browser: {
+    IE:     !!(window.attachEvent && !window.opera),
+    Opera:  !!window.opera,
+    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
+    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
+    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
+  },
+
+  BrowserFeatures: {
+    XPath: !!document.evaluate,
+    ElementExtensions: !!window.HTMLElement,
+    SpecificElementExtensions:
+      document.createElement('div').__proto__ &&
+      document.createElement('div').__proto__ !==
+        document.createElement('form').__proto__
+  },
+
+  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
+  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,
+
+  emptyFunction: function() { },
+  K: function(x) { return x }
+};
+
+if (Prototype.Browser.MobileSafari)
+  Prototype.BrowserFeatures.SpecificElementExtensions = false;
+
+
+/* Based on Alex Arnell's inheritance implementation. */
+var Class = {
+  create: function() {
+    var parent = null, properties = $A(arguments);
+    if (Object.isFunction(properties[0]))
+      parent = properties.shift();
+
+    function klass() {
+      this.initialize.apply(this, arguments);
+    }
+
+    Object.extend(klass, Class.Methods);
+    klass.superclass = parent;
+    klass.subclasses = [];
+
+    if (parent) {
+      var subclass = function() { };
+      subclass.prototype = parent.prototype;
+      klass.prototype = new subclass;
+      parent.subclasses.push(klass);
+    }
+
+    for (var i = 0; i < properties.length; i++)
+      klass.addMethods(properties[i]);
+
+    if (!klass.prototype.initialize)
+      klass.prototype.initialize = Prototype.emptyFunction;
+
+    klass.prototype.constructor = klass;
+
+    return klass;
+  }
+};
+
+Class.Methods = {
+  addMethods: function(source) {
+    var ancestor   = this.superclass && this.superclass.prototype;
+    var properties = Object.keys(source);
+
+    if (!Object.keys({ toString: true }).length)
+      properties.push("toString", "valueOf");
+
+    for (var i = 0, length = properties.length; i < length; i++) {
+      var property = properties[i], value = source[property];
+      if (ancestor && Object.isFunction(value) &&
+          value.argumentNames().first() == "$super") {
+        var method = value, value = Object.extend((function(m) {
+          return function() { return ancestor[m].apply(this, arguments) };
+        })(property).wrap(method), {
+          valueOf:  function() { return method },
+          toString: function() { return method.toString() }
+        });
+      }
+      this.prototype[property] = value;
+    }
+
+    return this;
+  }
+};
+
+var Abstract = { };
+
+Object.extend = function(destination, source) {
+  for (var property in source)
+    destination[property] = source[property];
+  return destination;
+};
+
+Object.extend(Object, {
+  inspect: function(object) {
+    try {
+      if (Object.isUndefined(object)) return 'undefined';
+      if (object === null) return 'null';
+      return object.inspect ? object.inspect() : String(object);
+    } catch (e) {
+      if (e instanceof RangeError) return '...';
+      throw e;
+    }
+  },
+
+  toJSON: function(object) {
+    var type = typeof object;
+    switch (type) {
+      case 'undefined':
+      case 'function':
+      case 'unknown': return;
+      case 'boolean': return object.toString();
+    }
+
+    if (object === null) return 'null';
+    if (object.toJSON) return object.toJSON();
+    if (Object.isElement(object)) return;
+
+    var results = [];
+    for (var property in object) {
+      var value = Object.toJSON(object[property]);
+      if (!Object.isUndefined(value))
+        results.push(property.toJSON() + ': ' + value);
+    }
+
+    return '{' + results.join(', ') + '}';
+  },
+
+  toQueryString: function(object) {
+    return $H(object).toQueryString();
+  },
+
+  toHTML: function(object) {
+    return object && object.toHTML ? object.toHTML() : String.interpret(object);
+  },
+
+  keys: function(object) {
+    var keys = [];
+    for (var property in object)
+      keys.push(property);
+    return keys;
+  },
+
+  values: function(object) {
+    var values = [];
+    for (var property in object)
+      values.push(object[property]);
+    return values;
+  },
+
+  clone: function(object) {
+    return Object.extend({ }, object);
+  },
+
+  isElement: function(object) {
+    return object && object.nodeType == 1;
+  },
+
+  isArray: function(object) {
+    return object != null && typeof object == "object" &&
+      'splice' in object && 'join' in object;
+  },
+
+  isHash: function(object) {
+    return object instanceof Hash;
+  },
+
+  isFunction: function(object) {
+    return typeof object == "function";
+  },
+
+  isString: function(object) {
+    return typeof object == "string";
+  },
+
+  isNumber: function(object) {
+    return typeof object == "number";
+  },
+
+  isUndefined: function(object) {
+    return typeof object == "undefined";
+  }
+});
+
+Object.extend(Function.prototype, {
+  argumentNames: function() {
+    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
+    return names.length == 1 && !names[0] ? [] : names;
+  },
+
+  bind: function() {
+    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
+    var __method = this, args = $A(arguments), object = args.shift();
+    return function() {
+      return __method.apply(object, args.concat($A(arguments)));
+    }
+  },
+
+  bindAsEventListener: function() {
+    var __method = this, args = $A(arguments), object = args.shift();
+    return function(event) {
+      return __method.apply(object, [event || window.event].concat(args));
+    }
+  },
+
+  curry: function() {
+    if (!arguments.length) return this;
+    var __method = this, args = $A(arguments);
+    return function() {
+      return __method.apply(this, args.concat($A(arguments)));
+    }
+  },
+
+  delay: function() {
+    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
+    return window.setTimeout(function() {
+      return __method.apply(__method, args);
+    }, timeout);
+  },
+
+  wrap: function(wrapper) {
+    var __method = this;
+    return function() {
+      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
+    }
+  },
+
+  methodize: function() {
+    if (this._methodized) return this._methodized;
+    var __method = this;
+    return this._methodized = function() {
+      return __method.apply(null, [this].concat($A(arguments)));
+    };
+  }
+});
+
+Function.prototype.defer = Function.prototype.delay.curry(0.01);
+
+Date.prototype.toJSON = function() {
+  return '"' + this.getUTCFullYear() + '-' +
+    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
+    this.getUTCDate().toPaddedString(2) + 'T' +
+    this.getUTCHours().toPaddedString(2) + ':' +
+    this.getUTCMinutes().toPaddedString(2) + ':' +
+    this.getUTCSeconds().toPaddedString(2) + 'Z"';
+};
+
+var Try = {
+  these: function() {
+    var returnValue;
+
+    for (var i = 0, length = arguments.length; i < length; i++) {
+      var lambda = arguments[i];
+      try {
+        returnValue = lambda();
+        break;
+      } catch (e) { }
+    }
+
+    return returnValue;
+  }
+};
+
+RegExp.prototype.match = RegExp.prototype.test;
+
+RegExp.escape = function(str) {
+  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
+};
+
+/*--------------------------------------------------------------------------*/
+
+var PeriodicalExecuter = Class.create({
+  initialize: function(callback, frequency) {
+    this.callback = callback;
+    this.frequency = frequency;
+    this.currentlyExecuting = false;
+
+    this.registerCallback();
+  },
+
+  registerCallback: function() {
+    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+  },
+
+  execute: function() {
+    this.callback(this);
+  },
+
+  stop: function() {
+    if (!this.timer) return;
+    clearInterval(this.timer);
+    this.timer = null;
+  },
+
+  onTimerEvent: function() {
+    if (!this.currentlyExecuting) {
+      try {
+        this.currentlyExecuting = true;
+        this.execute();
+      } finally {
+        this.currentlyExecuting = false;
+      }
+    }
+  }
+});
+Object.extend(String, {
+  interpret: function(value) {
+    return value == null ? '' : String(value);
+  },
+  specialChar: {
+    '\b': '\\b',
+    '\t': '\\t',
+    '\n': '\\n',
+    '\f': '\\f',
+    '\r': '\\r',
+    '\\': '\\\\'
+  }
+});
+
+Object.extend(String.prototype, {
+  gsub: function(pattern, replacement) {
+    var result = '', source = this, match;
+    replacement = arguments.callee.prepareReplacement(replacement);
+
+    while (source.length > 0) {
+      if (match = source.match(pattern)) {
+        result += source.slice(0, match.index);
+        result += String.interpret(replacement(match));
+        source  = source.slice(match.index + match[0].length);
+      } else {
+        result += source, source = '';
+      }
+    }
+    return result;
+  },
+
+  sub: function(pattern, replacement, count) {
+    replacement = this.gsub.prepareReplacement(replacement);
+    count = Object.isUndefined(count) ? 1 : count;
+
+    return this.gsub(pattern, function(match) {
+      if (--count < 0) return match[0];
+      return replacement(match);
+    });
+  },
+
+  scan: function(pattern, iterator) {
+    this.gsub(pattern, iterator);
+    return String(this);
+  },
+
+  truncate: function(length, truncation) {
+    length = length || 30;
+    truncation = Object.isUndefined(truncation) ? '...' : truncation;
+    return this.length > length ?
+      this.slice(0, length - truncation.length) + truncation : String(this);
+  },
+
+  strip: function() {
+    return this.replace(/^\s+/, '').replace(/\s+$/, '');
+  },
+
+  stripTags: function() {
+    return this.replace(/<\/?[^>]+>/gi, '');
+  },
+
+  stripScripts: function() {
+    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
+  },
+
+  extractScripts: function() {
+    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
+    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
+    return (this.match(matchAll) || []).map(function(scriptTag) {
+      return (scriptTag.match(matchOne) || ['', ''])[1];
+    });
+  },
+
+  evalScripts: function() {
+    return this.extractScripts().map(function(script) { return eval(script) });
+  },
+
+  escapeHTML: function() {
+    var self = arguments.callee;
+    self.text.data = this;
+    return self.div.innerHTML;
+  },
+
+  unescapeHTML: function() {
+    var div = new Element('div');
+    div.innerHTML = this.stripTags();
+    return div.childNodes[0] ? (div.childNodes.length > 1 ?
+      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
+      div.childNodes[0].nodeValue) : '';
+  },
+
+  toQueryParams: function(separator) {
+    var match = this.strip().match(/([^?#]*)(#.*)?$/);
+    if (!match) return { };
+
+    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
+      if ((pair = pair.split('='))[0]) {
+        var key = decodeURIComponent(pair.shift());
+        var value = pair.length > 1 ? pair.join('=') : pair[0];
+        if (value != undefined) value = decodeURIComponent(value);
+
+        if (key in hash) {
+          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
+          hash[key].push(value);
+        }
+        else hash[key] = value;
+      }
+      return hash;
+    });
+  },
+
+  toArray: function() {
+    return this.split('');
+  },
+
+  succ: function() {
+    return this.slice(0, this.length - 1) +
+      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
+  },
+
+  times: function(count) {
+    return count < 1 ? '' : new Array(count + 1).join(this);
+  },
+
+  camelize: function() {
+    var parts = this.split('-'), len = parts.length;
+    if (len == 1) return parts[0];
+
+    var camelized = this.charAt(0) == '-'
+      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
+      : parts[0];
+
+    for (var i = 1; i < len; i++)
+      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);
+
+    return camelized;
+  },
+
+  capitalize: function() {
+    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
+  },
+
+  underscore: function() {
+    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
+  },
+
+  dasherize: function() {
+    return this.gsub(/_/,'-');
+  },
+
+  inspect: function(useDoubleQuotes) {
+    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
+      var character = String.specialChar[match[0]];
+      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
+    });
+    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
+    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
+  },
+
+  toJSON: function() {
+    return this.inspect(true);
+  },
+
+  unfilterJSON: function(filter) {
+    return this.sub(filter || Prototype.JSONFilter, '#{1}');
+  },
+
+  isJSON: function() {
+    var str = this;
+    if (str.blank()) return false;
+    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
+    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
+  },
+
+  evalJSON: function(sanitize) {
+    var json = this.unfilterJSON();
+    try {
+      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
+    } catch (e) { }
+    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
+  },
+
+  include: function(pattern) {
+    return this.indexOf(pattern) > -1;
+  },
+
+  startsWith: function(pattern) {
+    return this.indexOf(pattern) === 0;
+  },
+
+  endsWith: function(pattern) {
+    var d = this.length - pattern.length;
+    return d >= 0 && this.lastIndexOf(pattern) === d;
+  },
+
+  empty: function() {
+    return this == '';
+  },
+
+  blank: function() {
+    return /^\s*$/.test(this);
+  },
+
+  interpolate: function(object, pattern) {
+    return new Template(this, pattern).evaluate(object);
+  }
+});
+
+if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
+  escapeHTML: function() {
+    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
+  },
+  unescapeHTML: function() {
+    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
+  }
+});
+
+String.prototype.gsub.prepareReplacement = function(replacement) {
+  if (Object.isFunction(replacement)) return replacement;
+  var template = new Template(replacement);
+  return function(match) { return template.evaluate(match) };
+};
+
+String.prototype.parseQuery = String.prototype.toQueryParams;
+
+Object.extend(String.prototype.escapeHTML, {
+  div:  document.createElement('div'),
+  text: document.createTextNode('')
+});
+
+with (String.prototype.escapeHTML) div.appendChild(text);
+
+var Template = Class.create({
+  initialize: function(template, pattern) {
+    this.template = template.toString();
+    this.pattern = pattern || Template.Pattern;
+  },
+
+  evaluate: function(object) {
+    if (Object.isFunction(object.toTemplateReplacements))
+      object = object.toTemplateReplacements();
+
+    return this.template.gsub(this.pattern, function(match) {
+      if (object == null) return '';
+
+      var before = match[1] || '';
+      if (before == '\\') return match[2];
+
+      var ctx = object, expr = match[3];
+      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
+      match = pattern.exec(expr);
+      if (match == null) return before;
+
+      while (match != null) {
+        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
+        ctx = ctx[comp];
+        if (null == ctx || '' == match[3]) break;
+        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
+        match = pattern.exec(expr);
+      }
+
+      return before + String.interpret(ctx);
+    });
+  }
+});
+Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
+
+var $break = { };
+
+var Enumerable = {
+  each: function(iterator, context) {
+    var index = 0;
+    iterator = iterator.bind(context);
+    try {
+      this._each(function(value) {
+        iterator(value, index++);
+      });
+    } catch (e) {
+      if (e != $break) throw e;
+    }
+    return this;
+  },
+
+  eachSlice: function(number, iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
+    var index = -number, slices = [], array = this.toArray();
+    while ((index += number) < array.length)
+      slices.push(array.slice(index, index+number));
+    return slices.collect(iterator, context);
+  },
+
+  all: function(iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
+    var result = true;
+    this.each(function(value, index) {
+      result = result && !!iterator(value, index);
+      if (!result) throw $break;
+    });
+    return result;
+  },
+
+  any: function(iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
+    var result = false;
+    this.each(function(value, index) {
+      if (result = !!iterator(value, index))
+        throw $break;
+    });
+    return result;
+  },
+
+  collect: function(iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
+    var results = [];
+    this.each(function(value, index) {
+      results.push(iterator(value, index));
+    });
+    return results;
+  },
+
+  detect: function(iterator, context) {
+    iterator = iterator.bind(context);
+    var result;
+    this.each(function(value, index) {
+      if (iterator(value, index)) {
+        result = value;
+        throw $break;
+      }
+    });
+    return result;
+  },
+
+  findAll: function(iterator, context) {
+    iterator = iterator.bind(context);
+    var results = [];
+    this.each(function(value, index) {
+      if (iterator(value, index))
+        results.push(value);
+    });
+    return results;
+  },
+
+  grep: function(filter, iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
+    var results = [];
+
+    if (Object.isString(filter))
+      filter = new RegExp(filter);
+
+    this.each(function(value, index) {
+      if (filter.match(value))
+        results.push(iterator(value, index));
+    });
+    return results;
+  },
+
+  include: function(object) {
+    if (Object.isFunction(this.indexOf))
+      if (this.indexOf(object) != -1) return true;
+
+    var found = false;
+    this.each(function(value) {
+      if (value == object) {
+        found = true;
+        throw $break;
+      }
+    });
+    return found;
+  },
+
+  inGroupsOf: function(number, fillWith) {
+    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
+    return this.eachSlice(number, function(slice) {
+      while(slice.length < number) slice.push(fillWith);
+      return slice;
+    });
+  },
+
+  inject: function(memo, iterator, context) {
+    iterator = iterator.bind(context);
+    this.each(function(value, index) {
+      memo = iterator(memo, value, index);
+    });
+    return memo;
+  },
+
+  invoke: function(method) {
+    var args = $A(arguments).slice(1);
+    return this.map(function(value) {
+      return value[method].apply(value, args);
+    });
+  },
+
+  max: function(iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
+    var result;
+    this.each(function(value, index) {
+      value = iterator(value, index);
+      if (result == null || value >= result)
+        result = value;
+    });
+    return result;
+  },
+
+  min: function(iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
+    var result;
+    this.each(function(value, index) {
+      value = iterator(value, index);
+      if (result == null || value < result)
+        result = value;
+    });
+    return result;
+  },
+
+  partition: function(iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
+    var trues = [], falses = [];
+    this.each(function(value, index) {
+      (iterator(value, index) ?
+        trues : falses).push(value);
+    });
+    return [trues, falses];
+  },
+
+  pluck: function(property) {
+    var results = [];
+    this.each(function(value) {
+      results.push(value[property]);
+    });
+    return results;
+  },
+
+  reject: function(iterator, context) {
+    iterator = iterator.bind(context);
+    var results = [];
+    this.each(function(value, index) {
+      if (!iterator(value, index))
+        results.push(value);
+    });
+    return results;
+  },
+
+  sortBy: function(iterator, context) {
+    iterator = iterator.bind(context);
+    return this.map(function(value, index) {
+      return {value: value, criteria: iterator(value, index)};
+    }).sort(function(left, right) {
+      var a = left.criteria, b = right.criteria;
+      return a < b ? -1 : a > b ? 1 : 0;
+    }).pluck('value');
+  },
+
+  toArray: function() {
+    return this.map();
+  },
+
+  zip: function() {
+    var iterator = Prototype.K, args = $A(arguments);
+    if (Object.isFunction(args.last()))
+      iterator = args.pop();
+
+    var collections = [this].concat(args).map($A);
+    return this.map(function(value, index) {
+      return iterator(collections.pluck(index));
+    });
+  },
+
+  size: function() {
+    return this.toArray().length;
+  },
+
+  inspect: function() {
+    return '#<Enumerable:' + this.toArray().inspect() + '>';
+  }
+};
+
+Object.extend(Enumerable, {
+  map:     Enumerable.collect,
+  find:    Enumerable.detect,
+  select:  Enumerable.findAll,
+  filter:  Enumerable.findAll,
+  member:  Enumerable.include,
+  entries: Enumerable.toArray,
+  every:   Enumerable.all,
+  some:    Enumerable.any
+});
+function $A(iterable) {
+  if (!iterable) return [];
+  if (iterable.toArray) return iterable.toArray();
+  var length = iterable.length || 0, results = new Array(length);
+  while (length--) results[length] = iterable[length];
+  return results;
+}
+
+if (Prototype.Browser.WebKit) {
+  $A = function(iterable) {
+    if (!iterable) return [];
+    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
+        iterable.toArray) return iterable.toArray();
+    var length = iterable.length || 0, results = new Array(length);
+    while (length--) results[length] = iterable[length];
+    return results;
+  };
+}
+
+Array.from = $A;
+
+Object.extend(Array.prototype, Enumerable);
+
+if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;
+
+Object.extend(Array.prototype, {
+  _each: function(iterator) {
+    for (var i = 0, length = this.length; i < length; i++)
+      iterator(this[i]);
+  },
+
+  clear: function() {
+    this.length = 0;
+    return this;
+  },
+
+  first: function() {
+    return this[0];
+  },
+
+  last: function() {
+    return this[this.length - 1];
+  },
+
+  compact: function() {
+    return this.select(function(value) {
+      return value != null;
+    });
+  },
+
+  flatten: function() {
+    return this.inject([], function(array, value) {
+      return array.concat(Object.isArray(value) ?
+        value.flatten() : [value]);
+    });
+  },
+
+  without: function() {
+    var values = $A(arguments);
+    return this.select(function(value) {
+      return !values.include(value);
+    });
+  },
+
+  reverse: function(inline) {
+    return (inline !== false ? this : this.toArray())._reverse();
+  },
+
+  reduce: function() {
+    return this.length > 1 ? this : this[0];
+  },
+
+  uniq: function(sorted) {
+    return this.inject([], function(array, value, index) {
+      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
+        array.push(value);
+      return array;
+    });
+  },
+
+  intersect: function(array) {
+    return this.uniq().findAll(function(item) {
+      return array.detect(function(value) { return item === value });
+    });
+  },
+
+  clone: function() {
+    return [].concat(this);
+  },
+
+  size: function() {
+    return this.length;
+  },
+
+  inspect: function() {
+    return '[' + this.map(Object.inspect).join(', ') + ']';
+  },
+
+  toJSON: function() {
+    var results = [];
+    this.each(function(object) {
+      var value = Object.toJSON(object);
+      if (!Object.isUndefined(value)) results.push(value);
+    });
+    return '[' + results.join(', ') + ']';
+  }
+});
+
+// use native browser JS 1.6 implementation if available
+if (Object.isFunction(Array.prototype.forEach))
+  Array.prototype._each = Array.prototype.forEach;
+
+if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
+  i || (i = 0);
+  var length = this.length;
+  if (i < 0) i = length + i;
+  for (; i < length; i++)
+    if (this[i] === item) return i;
+  return -1;
+};
+
+if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
+  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
+  var n = this.slice(0, i).reverse().indexOf(item);
+  return (n < 0) ? n : i - n - 1;
+};
+
+Array.prototype.toArray = Array.prototype.clone;
+
+function $w(string) {
+  if (!Object.isString(string)) return [];
+  string = string.strip();
+  return string ? string.split(/\s+/) : [];
+}
+
+if (Prototype.Browser.Opera){
+  Array.prototype.concat = function() {
+    var array = [];
+    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
+    for (var i = 0, length = arguments.length; i < length; i++) {
+      if (Object.isArray(arguments[i])) {
+        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
+          array.push(arguments[i][j]);
+      } else {
+        array.push(arguments[i]);
+      }
+    }
+    return array;
+  };
+}
+Object.extend(Number.prototype, {
+  toColorPart: function() {
+    return this.toPaddedString(2, 16);
+  },
+
+  succ: function() {
+    return this + 1;
+  },
+
+  times: function(iterator) {
+    $R(0, this, true).each(iterator);
+    return this;
+  },
+
+  toPaddedString: function(length, radix) {
+    var string = this.toString(radix || 10);
+    return '0'.times(length - string.length) + string;
+  },
+
+  toJSON: function() {
+    return isFinite(this) ? this.toString() : 'null';
+  }
+});
+
+$w('abs round ceil floor').each(function(method){
+  Number.prototype[method] = Math[method].methodize();
+});
+function $H(object) {
+  return new Hash(object);
+};
+
+var Hash = Class.create(Enumerable, (function() {
+
+  function toQueryPair(key, value) {
+    if (Object.isUndefined(value)) return key;
+    return key + '=' + encodeURIComponent(String.interpret(value));
+  }
+
+  return {
+    initialize: function(object) {
+      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
+    },
+
+    _each: function(iterator) {
+      for (var key in this._object) {
+        var value = this._object[key], pair = [key, value];
+        pair.key = key;
+        pair.value = value;
+        iterator(pair);
+      }
+    },
+
+    set: function(key, value) {
+      return this._object[key] = value;
+    },
+
+    get: function(key) {
+      return this._object[key];
+    },
+
+    unset: function(key) {
+      var value = this._object[key];
+      delete this._object[key];
+      return value;
+    },
+
+    toObject: function() {
+      return Object.clone(this._object);
+    },
+
+    keys: function() {
+      return this.pluck('key');
+    },
+
+    values: function() {
+      return this.pluck('value');
+    },
+
+    index: function(value) {
+      var match = this.detect(function(pair) {
+        return pair.value === value;
+      });
+      return match && match.key;
+    },
+
+    merge: function(object) {
+      return this.clone().update(object);
+    },
+
+    update: function(object) {
+      return new Hash(object).inject(this, function(result, pair) {
+        result.set(pair.key, pair.value);
+        return result;
+      });
+    },
+
+    toQueryString: function() {
+      return this.map(function(pair) {
+        var key = encodeURIComponent(pair.key), values = pair.value;
+
+        if (values && typeof values == 'object') {
+          if (Object.isArray(values))
+            return values.map(toQueryPair.curry(key)).join('&');
+        }
+        return toQueryPair(key, values);
+      }).join('&');
+    },
+
+    inspect: function() {
+      return '#<Hash:{' + this.map(function(pair) {
+        return pair.map(Object.inspect).join(': ');
+      }).join(', ') + '}>';
+    },
+
+    toJSON: function() {
+      return Object.toJSON(this.toObject());
+    },
+
+    clone: function() {
+      return new Hash(this);
+    }
+  }
+})());
+
+Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
+Hash.from = $H;
+var ObjectRange = Class.create(Enumerable, {
+  initialize: function(start, end, exclusive) {
+    this.start = start;
+    this.end = end;
+    this.exclusive = exclusive;
+  },
+
+  _each: function(iterator) {
+    var value = this.start;
+    while (this.include(value)) {
+      iterator(value);
+      value = value.succ();
+    }
+  },
+
+  include: function(value) {
+    if (value < this.start)
+      return false;
+    if (this.exclusive)
+      return value < this.end;
+    return value <= this.end;
+  }
+});
+
+var $R = function(start, end, exclusive) {
+  return new ObjectRange(start, end, exclusive);
+};
+
+var Ajax = {
+  getTransport: function() {
+    return Try.these(
+      function() {return new XMLHttpRequest()},
+      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
+      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
+    ) || false;
+  },
+
+  activeRequestCount: 0
+};
+
+Ajax.Responders = {
+  responders: [],
+
+  _each: function(iterator) {
+    this.responders._each(iterator);
+  },
+
+  register: function(responder) {
+    if (!this.include(responder))
+      this.responders.push(responder);
+  },
+
+  unregister: function(responder) {
+    this.responders = this.responders.without(responder);
+  },
+
+  dispatch: function(callback, request, transport, json) {
+    this.each(function(responder) {
+      if (Object.isFunction(responder[callback])) {
+        try {
+          responder[callback].apply(responder, [request, transport, json]);
+        } catch (e) { }
+      }
+    });
+  }
+};
+
+Object.extend(Ajax.Responders, Enumerable);
+
+Ajax.Responders.register({
+  onCreate:   function() { Ajax.activeRequestCount++ },
+  onComplete: function() { Ajax.activeRequestCount-- }
+});
+
+Ajax.Base = Class.create({
+  initialize: function(options) {
+    this.options = {
+      method:       'post',
+      asynchronous: true,
+      contentType:  'application/x-www-form-urlencoded',
+      encoding:     'UTF-8',
+      parameters:   '',
+      evalJSON:     true,
+      evalJS:       true
+    };
+    Object.extend(this.options, options || { });
+
+    this.options.method = this.options.method.toLowerCase();
+
+    if (Object.isString(this.options.parameters))
+      this.options.parameters = this.options.parameters.toQueryParams();
+    else if (Object.isHash(this.options.parameters))
+      this.options.parameters = this.options.parameters.toObject();
+  }
+});
+
+Ajax.Request = Class.create(Ajax.Base, {
+  _complete: false,
+
+  initialize: function($super, url, options) {
+    $super(options);
+    this.transport = Ajax.getTransport();
+    this.request(url);
+  },
+
+  request: function(url) {
+    this.url = url;
+    this.method = this.options.method;
+    var params = Object.clone(this.options.parameters);
+
+    if (!['get', 'post'].include(this.method)) {
+      // simulate other verbs over post
+      params['_method'] = this.method;
+      this.method = 'post';
+    }
+
+    this.parameters = params;
+
+    if (params = Object.toQueryString(params)) {
+      // when GET, append parameters to URL
+      if (this.method == 'get')
+        this.url += (this.url.include('?') ? '&' : '?') + params;
+      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
+        params += '&_=';
+    }
+
+    try {
+      var response = new Ajax.Response(this);
+      if (this.options.onCreate) this.options.onCreate(response);
+      Ajax.Responders.dispatch('onCreate', this, response);
+
+      this.transport.open(this.method.toUpperCase(), this.url,
+        this.options.asynchronous);
+
+      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);
+
+      this.transport.onreadystatechange = this.onStateChange.bind(this);
+      this.setRequestHeaders();
+
+      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
+      this.transport.send(this.body);
+
+      /* Force Firefox to handle ready state 4 for synchronous requests */
+      if (!this.options.asynchronous && this.transport.overrideMimeType)
+        this.onStateChange();
+
+    }
+    catch (e) {
+      this.dispatchException(e);
+    }
+  },
+
+  onStateChange: function() {
+    var readyState = this.transport.readyState;
+    if (readyState > 1 && !((readyState == 4) && this._complete))
+      this.respondToReadyState(this.transport.readyState);
+  },
+
+  setRequestHeaders: function() {
+    var headers = {
+      'X-Requested-With': 'XMLHttpRequest',
+      'X-Prototype-Version': Prototype.Version,
+      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
+    };
+
+    if (this.method == 'post') {
+      headers['Content-type'] = this.options.contentType +
+        (this.options.encoding ? '; charset=' + this.options.encoding : '');
+
+      /* Force "Connection: close" for older Mozilla browsers to work
+       * around a bug where XMLHttpRequest sends an incorrect
+       * Content-length header. See Mozilla Bugzilla #246651.
+       */
+      if (this.transport.overrideMimeType &&
+          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
+            headers['Connection'] = 'close';
+    }
+
+    // user-defined headers
+    if (typeof this.options.requestHeaders == 'object') {
+      var extras = this.options.requestHeaders;
+
+      if (Object.isFunction(extras.push))
+        for (var i = 0, length = extras.length; i < length; i += 2)
+          headers[extras[i]] = extras[i+1];
+      else
+        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
+    }
+
+    for (var name in headers)
+      this.transport.setRequestHeader(name, headers[name]);
+  },
+
+  success: function() {
+    var status = this.getStatus();
+    return !status || (status >= 200 && status < 300);
+  },
+
+  getStatus: function() {
+    try {
+      return this.transport.status || 0;
+    } catch (e) { return 0 }
+  },
+
+  respondToReadyState: function(readyState) {
+    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);
+
+    if (state == 'Complete') {
+      try {
+        this._complete = true;
+        (this.options['on' + response.status]
+         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
+         || Prototype.emptyFunction)(response, response.headerJSON);
+      } catch (e) {
+        this.dispatchException(e);
+      }
+
+      var contentType = response.getHeader('Content-type');
+      if (this.options.evalJS == 'force'
+          || (this.options.evalJS && this.isSameOrigin() && contentType
+          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
+        this.evalResponse();
+    }
+
+    try {
+      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
+      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
+    } catch (e) {
+      this.dispatchException(e);
+    }
+
+    if (state == 'Complete') {
+      // avoid memory leak in MSIE: clean up
+      this.transport.onreadystatechange = Prototype.emptyFunction;
+    }
+  },
+
+  isSameOrigin: function() {
+    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
+    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
+      protocol: location.protocol,
+      domain: document.domain,
+      port: location.port ? ':' + location.port : ''
+    }));
+  },
+
+  getHeader: function(name) {
+    try {
+      return this.transport.getResponseHeader(name) || null;
+    } catch (e) { return null }
+  },
+
+  evalResponse: function() {
+    try {
+      return eval((this.transport.responseText || '').unfilterJSON());
+    } catch (e) {
+      this.dispatchException(e);
+    }
+  },
+
+  dispatchException: function(exception) {
+    (this.options.onException || Prototype.emptyFunction)(this, exception);
+    Ajax.Responders.dispatch('onException', this, exception);
+  }
+});
+
+Ajax.Request.Events =
+  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
+
+Ajax.Response = Class.create({
+  initialize: function(request){
+    this.request = request;
+    var transport  = this.transport  = request.transport,
+        readyState = this.readyState = transport.readyState;
+
+    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
+      this.status       = this.getStatus();
+      this.statusText   = this.getStatusText();
+      this.responseText = String.interpret(transport.responseText);
+      this.headerJSON   = this._getHeaderJSON();
+    }
+
+    if(readyState == 4) {
+      var xml = transport.responseXML;
+      this.responseXML  = Object.isUndefined(xml) ? null : xml;
+      this.responseJSON = this._getResponseJSON();
+    }
+  },
+
+  status:      0,
+  statusText: '',
+
+  getStatus: Ajax.Request.prototype.getStatus,
+
+  getStatusText: function() {
+    try {
+      return this.transport.statusText || '';
+    } catch (e) { return '' }
+  },
+
+  getHeader: Ajax.Request.prototype.getHeader,
+
+  getAllHeaders: function() {
+    try {
+      return this.getAllResponseHeaders();
+    } catch (e) { return null }
+  },
+
+  getResponseHeader: function(name) {
+    return this.transport.getResponseHeader(name);
+  },
+
+  getAllResponseHeaders: function() {
+    return this.transport.getAllResponseHeaders();
+  },
+
+  _getHeaderJSON: function() {
+    var json = this.getHeader('X-JSON');
+    if (!json) return null;
+    json = decodeURIComponent(escape(json));
+    try {
+      return json.evalJSON(this.request.options.sanitizeJSON ||
+        !this.request.isSameOrigin());
+    } catch (e) {
+      this.request.dispatchException(e);
+    }
+  },
+
+  _getResponseJSON: function() {
+    var options = this.request.options;
+    if (!options.evalJSON || (options.evalJSON != 'force' &&
+      !(this.getHeader('Content-type') || '').include('application/json')) ||
+        this.responseText.blank())
+          return null;
+    try {
+      return this.responseText.evalJSON(options.sanitizeJSON ||
+        !this.request.isSameOrigin());
+    } catch (e) {
+      this.request.dispatchException(e);
+    }
+  }
+});
+
+Ajax.Updater = Class.create(Ajax.Request, {
+  initialize: function($super, container, url, options) {
+    this.container = {
+      success: (container.success || container),
+      failure: (container.failure || (container.success ? null : container))
+    };
+
+    options = Object.clone(options);
+    var onComplete = options.onComplete;
+    options.onComplete = (function(response, json) {
+      this.updateContent(response.responseText);
+      if (Object.isFunction(onComplete)) onComplete(response, json);
+    }).bind(this);
+
+    $super(url, options);
+  },
+
+  updateContent: function(responseText) {
+    var receiver = this.container[this.success() ? 'success' : 'failure'],
+        options = this.options;
+
+    if (!options.evalScripts) responseText = responseText.stripScripts();
+
+    if (receiver = $(receiver)) {
+      if (options.insertion) {
+        if (Object.isString(options.insertion)) {
+          var insertion = { }; insertion[options.insertion] = responseText;
+          receiver.insert(insertion);
+        }
+        else options.insertion(receiver, responseText);
+      }
+      else receiver.update(responseText);
+    }
+  }
+});
+
+Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
+  initialize: function($super, container, url, options) {
+    $super(options);
+    this.onComplete = this.options.onComplete;
+
+    this.frequency = (this.options.frequency || 2);
+    this.decay = (this.options.decay || 1);
+
+    this.updater = { };
+    this.container = container;
+    this.url = url;
+
+    this.start();
+  },
+
+  start: function() {
+    this.options.onComplete = this.updateComplete.bind(this);
+    this.onTimerEvent();
+  },
+
+  stop: function() {
+    this.updater.options.onComplete = undefined;
+    clearTimeout(this.timer);
+    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
+  },
+
+  updateComplete: function(response) {
+    if (this.options.decay) {
+      this.decay = (response.responseText == this.lastText ?
+        this.decay * this.options.decay : 1);
+
+      this.lastText = response.responseText;
+    }
+    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
+  },
+
+  onTimerEvent: function() {
+    this.updater = new Ajax.Updater(this.container, this.url, this.options);
+  }
+});
+function $(element) {
+  if (arguments.length > 1) {
+    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
+      elements.push($(arguments[i]));
+    return elements;
+  }
+  if (Object.isString(element))
+    element = document.getElementById(element);
+  return Element.extend(element);
+}
+
+if (Prototype.BrowserFeatures.XPath) {
+  document._getElementsByXPath = function(expression, parentElement) {
+    var results = [];
+    var query = document.evaluate(expression, $(parentElement) || document,
+      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
+    for (var i = 0, length = query.snapshotLength; i < length; i++)
+      results.push(Element.extend(query.snapshotItem(i)));
+    return results;
+  };
+}
+
+/*--------------------------------------------------------------------------*/
+
+if (!window.Node) var Node = { };
+
+if (!Node.ELEMENT_NODE) {
+  // DOM level 2 ECMAScript Language Binding
+  Object.extend(Node, {
+    ELEMENT_NODE: 1,
+    ATTRIBUTE_NODE: 2,
+    TEXT_NODE: 3,
+    CDATA_SECTION_NODE: 4,
+    ENTITY_REFERENCE_NODE: 5,
+    ENTITY_NODE: 6,
+    PROCESSING_INSTRUCTION_NODE: 7,
+    COMMENT_NODE: 8,
+    DOCUMENT_NODE: 9,
+    DOCUMENT_TYPE_NODE: 10,
+    DOCUMENT_FRAGMENT_NODE: 11,
+    NOTATION_NODE: 12
+  });
+}
+
+(function() {
+  var element = this.Element;
+  this.Element = function(tagName, attributes) {
+    attributes = attributes || { };
+    tagName = tagName.toLowerCase();
+    var cache = Element.cache;
+    if (Prototype.Browser.IE && attributes.name) {
+      tagName = '<' + tagName + ' name="' + attributes.name + '">';
+      delete attributes.name;
+      return Element.writeAttribute(document.createElement(tagName), attributes);
+    }
+    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
+    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
+  };
+  Object.extend(this.Element, element || { });
+}).call(window);
+
+Element.cache = { };
+
+Element.Methods = {
+  visible: function(element) {
+    return $(element).style.display != 'none';
+  },
+
+  toggle: function(element) {
+    element = $(element);
+    Element[Element.visible(element) ? 'hide' : 'show'](element);
+    return element;
+  },
+
+  hide: function(element) {
+    $(element).style.display = 'none';
+    return element;
+  },
+
+  show: function(element) {
+    $(element).style.display = '';
+    return element;
+  },
+
+  remove: function(element) {
+    element = $(element);
+    element.parentNode.removeChild(element);
+    return element;
+  },
+
+  update: function(element, content) {
+    element = $(element);
+    if (content && content.toElement) content = content.toElement();
+    if (Object.isElement(content)) return element.update().insert(content);
+    content = Object.toHTML(content);
+    element.innerHTML = content.stripScripts();
+    content.evalScripts.bind(content).defer();
+    return element;
+  },
+
+  replace: function(element, content) {
+    element = $(element);
+    if (content && content.toElement) content = content.toElement();
+    else if (!Object.isElement(content)) {
+      content = Object.toHTML(content);
+      var range = element.ownerDocument.createRange();
+      range.selectNode(element);
+      content.evalScripts.bind(content).defer();
+      content = range.createContextualFragment(content.stripScripts());
+    }
+    element.parentNode.replaceChild(content, element);
+    return element;
+  },
+
+  insert: function(element, insertions) {
+    element = $(element);
+
+    if (Object.isString(insertions) || Object.isNumber(insertions) ||
+        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
+          insertions = {bottom:insertions};
+
+    var content, insert, tagName, childNodes;
+
+    for (var position in insertions) {
+      content  = insertions[position];
+      position = position.toLowerCase();
+      insert = Element._insertionTranslations[position];
+
+      if (content && content.toElement) content = content.toElement();
+      if (Object.isElement(content)) {
+        insert(element, content);
+        continue;
+      }
+
+      content = Object.toHTML(content);
+
+      tagName = ((position == 'before' || position == 'after')
+        ? element.parentNode : element).tagName.toUpperCase();
+
+      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
+
+      if (position == 'top' || position == 'after') childNodes.reverse();
+      childNodes.each(insert.curry(element));
+
+      content.evalScripts.bind(content).defer();
+    }
+
+    return element;
+  },
+
+  wrap: function(element, wrapper, attributes) {
+    element = $(element);
+    if (Object.isElement(wrapper))
+      $(wrapper).writeAttribute(attributes || { });
+    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
+    else wrapper = new Element('div', wrapper);
+    if (element.parentNode)
+      element.parentNode.replaceChild(wrapper, element);
+    wrapper.appendChild(element);
+    return wrapper;
+  },
+
+  inspect: function(element) {
+    element = $(element);
+    var result = '<' + element.tagName.toLowerCase();
+    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
+      var property = pair.first(), attribute = pair.last();
+      var value = (element[property] || '').toString();
+      if (value) result += ' ' + attribute + '=' + value.inspect(true);
+    });
+    return result + '>';
+  },
+
+  recursivelyCollect: function(element, property) {
+    element = $(element);
+    var elements = [];
+    while (element = element[property])
+      if (element.nodeType == 1)
+        elements.push(Element.extend(element));
+    return elements;
+  },
+
+  ancestors: function(element) {
+    return $(element).recursivelyCollect('parentNode');
+  },
+
+  descendants: function(element) {
+    return $(element).select("*");
+  },
+
+  firstDescendant: function(element) {
+    element = $(element).firstChild;
+    while (element && element.nodeType != 1) element = element.nextSibling;
+    return $(element);
+  },
+
+  immediateDescendants: function(element) {
+    if (!(element = $(element).firstChild)) return [];
+    while (element && element.nodeType != 1) element = element.nextSibling;
+    if (element) return [element].concat($(element).nextSiblings());
+    return [];
+  },
+
+  previousSiblings: function(element) {
+    return $(element).recursivelyCollect('previousSibling');
+  },
+
+  nextSiblings: function(element) {
+    return $(element).recursivelyCollect('nextSibling');
+  },
+
+  siblings: function(element) {
+    element = $(element);
+    return element.previousSiblings().reverse().concat(element.nextSiblings());
+  },
+
+  match: function(element, selector) {
+    if (Object.isString(selector))
+      selector = new Selector(selector);
+    return selector.match($(element));
+  },
+
+  up: function(element, expression, index) {
+    element = $(element);
+    if (arguments.length == 1) return $(element.parentNode);
+    var ancestors = element.ancestors();
+    return Object.isNumber(expression) ? ancestors[expression] :
+      Selector.findElement(ancestors, expression, index);
+  },
+
+  down: function(element, expression, index) {
+    element = $(element);
+    if (arguments.length == 1) return element.firstDescendant();
+    return Object.isNumber(expression) ? element.descendants()[expression] :
+      element.select(expression)[index || 0];
+  },
+
+  previous: function(element, expression, index) {
+    element = $(element);
+    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
+    var previousSiblings = element.previousSiblings();
+    return Object.isNumber(expression) ? previousSiblings[expression] :
+      Selector.findElement(previousSiblings, expression, index);
+  },
+
+  next: function(element, expression, index) {
+    element = $(element);
+    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
+    var nextSiblings = element.nextSiblings();
+    return Object.isNumber(expression) ? nextSiblings[expression] :
+      Selector.findElement(nextSiblings, expression, index);
+  },
+
+  select: function() {
+    var args = $A(arguments), element = $(args.shift());
+    return Selector.findChildElements(element, args);
+  },
+
+  adjacent: function() {
+    var args = $A(arguments), element = $(args.shift());
+    return Selector.findChildElements(element.parentNode, args).without(element);
+  },
+
+  identify: function(element) {
+    element = $(element);
+    var id = element.readAttribute('id'), self = arguments.callee;
+    if (id) return id;
+    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
+    element.writeAttribute('id', id);
+    return id;
+  },
+
+  readAttribute: function(element, name) {
+    element = $(element);
+    if (Prototype.Browser.IE) {
+      var t = Element._attributeTranslations.read;
+      if (t.values[name]) return t.values[name](element, name);
+      if (t.names[name]) name = t.names[name];
+      if (name.include(':')) {
+        return (!element.attributes || !element.attributes[name]) ? null :
+         element.attributes[name].value;
+      }
+    }
+    return element.getAttribute(name);
+  },
+
+  writeAttribute: function(element, name, value) {
+    element = $(element);
+    var attributes = { }, t = Element._attributeTranslations.write;
+
+    if (typeof name == 'object') attributes = name;
+    else attributes[name] = Object.isUndefined(value) ? true : value;
+
+    for (var attr in attributes) {
+      name = t.names[attr] || attr;
+      value = attributes[attr];
+      if (t.values[attr]) name = t.values[attr](element, value);
+      if (value === false || value === null)
+        element.removeAttribute(name);
+      else if (value === true)
+        element.setAttribute(name, name);
+      else element.setAttribute(name, value);
+    }
+    return element;
+  },
+
+  getHeight: function(element) {
+    return $(element).getDimensions().height;
+  },
+
+  getWidth: function(element) {
+    return $(element).getDimensions().width;
+  },
+
+  classNames: function(element) {
+    return new Element.ClassNames(element);
+  },
+
+  hasClassName: function(element, className) {
+    if (!(element = $(element))) return;
+    var elementClassName = element.className;
+    return (elementClassName.length > 0 && (elementClassName == className ||
+      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
+  },
+
+  addClassName: function(element, className) {
+    if (!(element = $(element))) return;
+    if (!element.hasClassName(className))
+      element.className += (element.className ? ' ' : '') + className;
+    return element;
+  },
+
+  removeClassName: function(element, className) {
+    if (!(element = $(element))) return;
+    element.className = element.className.replace(
+      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
+    return element;
+  },
+
+  toggleClassName: function(element, className) {
+    if (!(element = $(element))) return;
+    return element[element.hasClassName(className) ?
+      'removeClassName' : 'addClassName'](className);
+  },
+
+  // removes whitespace-only text node children
+  cleanWhitespace: function(element) {
+    element = $(element);
+    var node = element.firstChild;
+    while (node) {
+      var nextNode = node.nextSibling;
+      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
+        element.removeChild(node);
+      node = nextNode;
+    }
+    return element;
+  },
+
+  empty: function(element) {
+    return $(element).innerHTML.blank();
+  },
+
+  descendantOf: function(element, ancestor) {
+    element = $(element), ancestor = $(ancestor);
+    var originalAncestor = ancestor;
+
+    if (element.compareDocumentPosition)
+      return (element.compareDocumentPosition(ancestor) & 8) === 8;
+
+    if (element.sourceIndex && !Prototype.Browser.Opera) {
+      var e = element.sourceIndex, a = ancestor.sourceIndex,
+       nextAncestor = ancestor.nextSibling;
+      if (!nextAncestor) {
+        do { ancestor = ancestor.parentNode; }
+        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
+      }
+      if (nextAncestor && nextAncestor.sourceIndex)
+       return (e > a && e < nextAncestor.sourceIndex);
+    }
+
+    while (element = element.parentNode)
+      if (element == originalAncestor) return true;
+    return false;
+  },
+
+  scrollTo: function(element) {
+    element = $(element);
+    var pos = element.cumulativeOffset();
+    window.scrollTo(pos[0], pos[1]);
+    return element;
+  },
+
+  getStyle: function(element, style) {
+    element = $(element);
+    style = style == 'float' ? 'cssFloat' : style.camelize();
+    var value = element.style[style];
+    if (!value) {
+      var css = document.defaultView.getComputedStyle(element, null);
+      value = css ? css[style] : null;
+    }
+    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
+    return value == 'auto' ? null : value;
+  },
+
+  getOpacity: function(element) {
+    return $(element).getStyle('opacity');
+  },
+
+  setStyle: function(element, styles) {
+    element = $(element);
+    var elementStyle = element.style, match;
+    if (Object.isString(styles)) {
+      element.style.cssText += ';' + styles;
+      return styles.include('opacity') ?
+        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
+    }
+    for (var property in styles)
+      if (property == 'opacity') element.setOpacity(styles[property]);
+      else
+        elementStyle[(property == 'float' || property == 'cssFloat') ?
+          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
+            property] = styles[property];
+
+    return element;
+  },
+
+  setOpacity: function(element, value) {
+    element = $(element);
+    element.style.opacity = (value == 1 || value === '') ? '' :
+      (value < 0.00001) ? 0 : value;
+    return element;
+  },
+
+  getDimensions: function(element) {
+    element = $(element);
+    var display = $(element).getStyle('display');
+    if (display != 'none' && display != null) // Safari bug
+      return {width: element.offsetWidth, height: element.offsetHeight};
+
+    // All *Width and *Height properties give 0 on elements with display none,
+    // so enable the element temporarily
+    var els = element.style;
+    var originalVisibility = els.visibility;
+    var originalPosition = els.position;
+    var originalDisplay = els.display;
+    els.visibility = 'hidden';
+    els.position = 'absolute';
+    els.display = 'block';
+    var originalWidth = element.clientWidth;
+    var originalHeight = element.clientHeight;
+    els.display = originalDisplay;
+    els.position = originalPosition;
+    els.visibility = originalVisibility;
+    return {width: originalWidth, height: originalHeight};
+  },
+
+  makePositioned: function(element) {
+    element = $(element);
+    var pos = Element.getStyle(element, 'position');
+    if (pos == 'static' || !pos) {
+      element._madePositioned = true;
+      element.style.position = 'relative';
+      // Opera returns the offset relative to the positioning context, when an
+      // element is position relative but top and left have not been defined
+      if (window.opera) {
+        element.style.top = 0;
+        element.style.left = 0;
+      }
+    }
+    return element;
+  },
+
+  undoPositioned: function(element) {
+    element = $(element);
+    if (element._madePositioned) {
+      element._madePositioned = undefined;
+      element.style.position =
+        element.style.top =
+        element.style.left =
+        element.style.bottom =
+        element.style.right = '';
+    }
+    return element;
+  },
+
+  makeClipping: function(element) {
+    element = $(element);
+    if (element._overflow) return element;
+    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
+    if (element._overflow !== 'hidden')
+      element.style.overflow = 'hidden';
+    return element;
+  },
+
+  undoClipping: function(element) {
+    element = $(element);
+    if (!element._overflow) return element;
+    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
+    element._overflow = null;
+    return element;
+  },
+
+  cumulativeOffset: function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+      element = element.offsetParent;
+    } while (element);
+    return Element._returnOffset(valueL, valueT);
+  },
+
+  positionedOffset: function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+      element = element.offsetParent;
+      if (element) {
+        if (element.tagName == 'BODY') break;
+        var p = Element.getStyle(element, 'position');
+        if (p !== 'static') break;
+      }
+    } while (element);
+    return Element._returnOffset(valueL, valueT);
+  },
+
+  absolutize: function(element) {
+    element = $(element);
+    if (element.getStyle('position') == 'absolute') return;
+    // Position.prepare(); // To be done manually by Scripty when it needs it.
+
+    var offsets = element.positionedOffset();
+    var top     = offsets[1];
+    var left    = offsets[0];
+    var width   = element.clientWidth;
+    var height  = element.clientHeight;
+
+    element._originalLeft   = left - parseFloat(element.style.left  || 0);
+    element._originalTop    = top  - parseFloat(element.style.top || 0);
+    element._originalWidth  = element.style.width;
+    element._originalHeight = element.style.height;
+
+    element.style.position = 'absolute';
+    element.style.top    = top + 'px';
+    element.style.left   = left + 'px';
+    element.style.width  = width + 'px';
+    element.style.height = height + 'px';
+    return element;
+  },
+
+  relativize: function(element) {
+    element = $(element);
+    if (element.getStyle('position') == 'relative') return;
+    // Position.prepare(); // To be done manually by Scripty when it needs it.
+
+    element.style.position = 'relative';
+    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
+    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);
+
+    element.style.top    = top + 'px';
+    element.style.left   = left + 'px';
+    element.style.height = element._originalHeight;
+    element.style.width  = element._originalWidth;
+    return element;
+  },
+
+  cumulativeScrollOffset: function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.scrollTop  || 0;
+      valueL += element.scrollLeft || 0;
+      element = element.parentNode;
+    } while (element);
+    return Element._returnOffset(valueL, valueT);
+  },
+
+  getOffsetParent: function(element) {
+    if (element.offsetParent) return $(element.offsetParent);
+    if (element == document.body) return $(element);
+
+    while ((element = element.parentNode) && element != document.body)
+      if (Element.getStyle(element, 'position') != 'static')
+        return $(element);
+
+    return $(document.body);
+  },
+
+  viewportOffset: function(forElement) {
+    var valueT = 0, valueL = 0;
+
+    var element = forElement;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+
+      // Safari fix
+      if (element.offsetParent == document.body &&
+        Element.getStyle(element, 'position') == 'absolute') break;
+
+    } while (element = element.offsetParent);
+
+    element = forElement;
+    do {
+      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
+        valueT -= element.scrollTop  || 0;
+        valueL -= element.scrollLeft || 0;
+      }
+    } while (element = element.parentNode);
+
+    return Element._returnOffset(valueL, valueT);
+  },
+
+  clonePosition: function(element, source) {
+    var options = Object.extend({
+      setLeft:    true,
+      setTop:     true,
+      setWidth:   true,
+      setHeight:  true,
+      offsetTop:  0,
+      offsetLeft: 0
+    }, arguments[2] || { });
+
+    // find page position of source
+    source = $(source);
+    var p = source.viewportOffset();
+
+    // find coordinate system to use
+    element = $(element);
+    var delta = [0, 0];
+    var parent = null;
+    // delta [0,0] will do fine with position: fixed elements,
+    // position:absolute needs offsetParent deltas
+    if (Element.getStyle(element, 'position') == 'absolute') {
+      parent = element.getOffsetParent();
+      delta = parent.viewportOffset();
+    }
+
+    // correct by body offsets (fixes Safari)
+    if (parent == document.body) {
+      delta[0] -= document.body.offsetLeft;
+      delta[1] -= document.body.offsetTop;
+    }
+
+    // set position
+    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
+    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
+    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
+    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
+    return element;
+  }
+};
+
+Element.Methods.identify.counter = 1;
+
+Object.extend(Element.Methods, {
+  getElementsBySelector: Element.Methods.select,
+  childElements: Element.Methods.immediateDescendants
+});
+
+Element._attributeTranslations = {
+  write: {
+    names: {
+      className: 'class',
+      htmlFor:   'for'
+    },
+    values: { }
+  }
+};
+
+if (Prototype.Browser.Opera) {
+  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
+    function(proceed, element, style) {
+      switch (style) {
+        case 'left': case 'top': case 'right': case 'bottom':
+          if (proceed(element, 'position') === 'static') return null;
+        case 'height': case 'width':
+          // returns '0px' for hidden elements; we want it to return null
+          if (!Element.visible(element)) return null;
+
+          // returns the border-box dimensions rather than the content-box
+          // dimensions, so we subtract padding and borders from the value
+          var dim = parseInt(proceed(element, style), 10);
+
+          if (dim !== element['offset' + style.capitalize()])
+            return dim + 'px';
+
+          var properties;
+          if (style === 'height') {
+            properties = ['border-top-width', 'padding-top',
+             'padding-bottom', 'border-bottom-width'];
+          }
+          else {
+            properties = ['border-left-width', 'padding-left',
+             'padding-right', 'border-right-width'];
+          }
+          return properties.inject(dim, function(memo, property) {
+            var val = proceed(element, property);
+            return val === null ? memo : memo - parseInt(val, 10);
+          }) + 'px';
+        default: return proceed(element, style);
+      }
+    }
+  );
+
+  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
+    function(proceed, element, attribute) {
+      if (attribute === 'title') return element.title;
+      return proceed(element, attribute);
+    }
+  );
+}
+
+else if (Prototype.Browser.IE) {
+  // IE doesn't report offsets correctly for static elements, so we change them
+  // to "relative" to get the values, then change them back.
+  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
+    function(proceed, element) {
+      element = $(element);
+      var position = element.getStyle('position');
+      if (position !== 'static') return proceed(element);
+      element.setStyle({ position: 'relative' });
+      var value = proceed(element);
+      element.setStyle({ position: position });
+      return value;
+    }
+  );
+
+  $w('positionedOffset viewportOffset').each(function(method) {
+    Element.Methods[method] = Element.Methods[method].wrap(
+      function(proceed, element) {
+        element = $(element);
+        var position = element.getStyle('position');
+        if (position !== 'static') return proceed(element);
+        // Trigger hasLayout on the offset parent so that IE6 reports
+        // accurate offsetTop and offsetLeft values for position: fixed.
+        var offsetParent = element.getOffsetParent();
+        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
+          offsetParent.setStyle({ zoom: 1 });
+        element.setStyle({ position: 'relative' });
+        var value = proceed(element);
+        element.setStyle({ position: position });
+        return value;
+      }
+    );
+  });
+
+  Element.Methods.getStyle = function(element, style) {
+    element = $(element);
+    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
+    var value = element.style[style];
+    if (!value && element.currentStyle) value = element.currentStyle[style];
+
+    if (style == 'opacity') {
+      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
+        if (value[1]) return parseFloat(value[1]) / 100;
+      return 1.0;
+    }
+
+    if (value == 'auto') {
+      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
+        return element['offset' + style.capitalize()] + 'px';
+      return null;
+    }
+    return value;
+  };
+
+  Element.Methods.setOpacity = function(element, value) {
+    function stripAlpha(filter){
+      return filter.replace(/alpha\([^\)]*\)/gi,'');
+    }
+    element = $(element);
+    var currentStyle = element.currentStyle;
+    if ((currentStyle && !currentStyle.hasLayout) ||
+      (!currentStyle && element.style.zoom == 'normal'))
+        element.style.zoom = 1;
+
+    var filter = element.getStyle('filter'), style = element.style;
+    if (value == 1 || value === '') {
+      (filter = stripAlpha(filter)) ?
+        style.filter = filter : style.removeAttribute('filter');
+      return element;
+    } else if (value < 0.00001) value = 0;
+    style.filter = stripAlpha(filter) +
+      'alpha(opacity=' + (value * 100) + ')';
+    return element;
+  };
+
+  Element._attributeTranslations = {
+    read: {
+      names: {
+        'class': 'className',
+        'for':   'htmlFor'
+      },
+      values: {
+        _getAttr: function(element, attribute) {
+          return element.getAttribute(attribute, 2);
+        },
+        _getAttrNode: function(element, attribute) {
+          var node = element.getAttributeNode(attribute);
+          return node ? node.value : "";
+        },
+        _getEv: function(element, attribute) {
+          attribute = element.getAttribute(attribute);
+          return attribute ? attribute.toString().slice(23, -2) : null;
+        },
+        _flag: function(element, attribute) {
+          return $(element).hasAttribute(attribute) ? attribute : null;
+        },
+        style: function(element) {
+          return element.style.cssText.toLowerCase();
+        },
+        title: function(element) {
+          return element.title;
+        }
+      }
+    }
+  };
+
+  Element._attributeTranslations.write = {
+    names: Object.extend({
+      cellpadding: 'cellPadding',
+      cellspacing: 'cellSpacing'
+    }, Element._attributeTranslations.read.names),
+    values: {
+      checked: function(element, value) {
+        element.checked = !!value;
+      },
+
+      style: function(element, value) {
+        element.style.cssText = value ? value : '';
+      }
+    }
+  };
+
+  Element._attributeTranslations.has = {};
+
+  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
+      'encType maxLength readOnly longDesc').each(function(attr) {
+    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
+    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
+  });
+
+  (function(v) {
+    Object.extend(v, {
+      href:        v._getAttr,
+      src:         v._getAttr,
+      type:        v._getAttr,
+      action:      v._getAttrNode,
+      disabled:    v._flag,
+      checked:     v._flag,
+      readonly:    v._flag,
+      multiple:    v._flag,
+      onload:      v._getEv,
+      onunload:    v._getEv,
+      onclick:     v._getEv,
+      ondblclick:  v._getEv,
+      onmousedown: v._getEv,
+      onmouseup:   v._getEv,
+      onmouseover: v._getEv,
+      onmousemove: v._getEv,
+      onmouseout:  v._getEv,
+      onfocus:     v._getEv,
+      onblur:      v._getEv,
+      onkeypress:  v._getEv,
+      onkeydown:   v._getEv,
+      onkeyup:     v._getEv,
+      onsubmit:    v._getEv,
+      onreset:     v._getEv,
+      onselect:    v._getEv,
+      onchange:    v._getEv
+    });
+  })(Element._attributeTranslations.read.values);
+}
+
+else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
+  Element.Methods.setOpacity = function(element, value) {
+    element = $(element);
+    element.style.opacity = (value == 1) ? 0.999999 :
+      (value === '') ? '' : (value < 0.00001) ? 0 : value;
+    return element;
+  };
+}
+
+else if (Prototype.Browser.WebKit) {
+  Element.Methods.setOpacity = function(element, value) {
+    element = $(element);
+    element.style.opacity = (value == 1 || value === '') ? '' :
+      (value < 0.00001) ? 0 : value;
+
+    if (value == 1)
+      if(element.tagName == 'IMG' && element.width) {
+        element.width++; element.width--;
+      } else try {
+        var n = document.createTextNode(' ');
+        element.appendChild(n);
+        element.removeChild(n);
+      } catch (e) { }
+
+    return element;
+  };
+
+  // Safari returns margins on body which is incorrect if the child is absolutely
+  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
+  // KHTML/WebKit only.
+  Element.Methods.cumulativeOffset = function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+      if (element.offsetParent == document.body)
+        if (Element.getStyle(element, 'position') == 'absolute') break;
+
+      element = element.offsetParent;
+    } while (element);
+
+    return Element._returnOffset(valueL, valueT);
+  };
+}
+
+if (Prototype.Browser.IE || Prototype.Browser.Opera) {
+  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
+  Element.Methods.update = function(element, content) {
+    element = $(element);
+
+    if (content && content.toElement) content = content.toElement();
+    if (Object.isElement(content)) return element.update().insert(content);
+
+    content = Object.toHTML(content);
+    var tagName = element.tagName.toUpperCase();
+
+    if (tagName in Element._insertionTranslations.tags) {
+      $A(element.childNodes).each(function(node) { element.removeChild(node) });
+      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
+        .each(function(node) { element.appendChild(node) });
+    }
+    else element.innerHTML = content.stripScripts();
+
+    content.evalScripts.bind(content).defer();
+    return element;
+  };
+}
+
+if ('outerHTML' in document.createElement('div')) {
+  Element.Methods.replace = function(element, content) {
+    element = $(element);
+
+    if (content && content.toElement) content = content.toElement();
+    if (Object.isElement(content)) {
+      element.parentNode.replaceChild(content, element);
+      return element;
+    }
+
+    content = Object.toHTML(content);
+    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();
+
+    if (Element._insertionTranslations.tags[tagName]) {
+      var nextSibling = element.next();
+      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
+      parent.removeChild(element);
+      if (nextSibling)
+        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
+      else
+        fragments.each(function(node) { parent.appendChild(node) });
+    }
+    else element.outerHTML = content.stripScripts();
+
+    content.evalScripts.bind(content).defer();
+    return element;
+  };
+}
+
+Element._returnOffset = function(l, t) {
+  var result = [l, t];
+  result.left = l;
+  result.top = t;
+  return result;
+};
+
+Element._getContentFromAnonymousElement = function(tagName, html) {
+  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
+  if (t) {
+    div.innerHTML = t[0] + html + t[1];
+    t[2].times(function() { div = div.firstChild });
+  } else div.innerHTML = html;
+  return $A(div.childNodes);
+};
+
+Element._insertionTranslations = {
+  before: function(element, node) {
+    element.parentNode.insertBefore(node, element);
+  },
+  top: function(element, node) {
+    element.insertBefore(node, element.firstChild);
+  },
+  bottom: function(element, node) {
+    element.appendChild(node);
+  },
+  after: function(element, node) {
+    element.parentNode.insertBefore(node, element.nextSibling);
+  },
+  tags: {
+    TABLE:  ['<table>',                '</table>',                   1],
+    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
+    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
+    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
+    SELECT: ['<select>',               '</select>',                  1]
+  }
+};
+
+(function() {
+  Object.extend(this.tags, {
+    THEAD: this.tags.TBODY,
+    TFOOT: this.tags.TBODY,
+    TH:    this.tags.TD
+  });
+}).call(Element._insertionTranslations);
+
+Element.Methods.Simulated = {
+  hasAttribute: function(element, attribute) {
+    attribute = Element._attributeTranslations.has[attribute] || attribute;
+    var node = $(element).getAttributeNode(attribute);
+    return node && node.specified;
+  }
+};
+
+Element.Methods.ByTag = { };
+
+Object.extend(Element, Element.Methods);
+
+if (!Prototype.BrowserFeatures.ElementExtensions &&
+    document.createElement('div').__proto__) {
+  window.HTMLElement = { };
+  window.HTMLElement.prototype = document.createElement('div').__proto__;
+  Prototype.BrowserFeatures.ElementExtensions = true;
+}
+
+Element.extend = (function() {
+  if (Prototype.BrowserFeatures.SpecificElementExtensions)
+    return Prototype.K;
+
+  var Methods = { }, ByTag = Element.Methods.ByTag;
+
+  var extend = Object.extend(function(element) {
+    if (!element || element._extendedByPrototype ||
+        element.nodeType != 1 || element == window) return element;
+
+    var methods = Object.clone(Methods),
+      tagName = element.tagName, property, value;
+
+    // extend methods for specific tags
+    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);
+
+    for (property in methods) {
+      value = methods[property];
+      if (Object.isFunction(value) && !(property in element))
+        element[property] = value.methodize();
+    }
+
+    element._extendedByPrototype = Prototype.emptyFunction;
+    return element;
+
+  }, {
+    refresh: function() {
+      // extend methods for all tags (Safari doesn't need this)
+      if (!Prototype.BrowserFeatures.ElementExtensions) {
+        Object.extend(Methods, Element.Methods);
+        Object.extend(Methods, Element.Methods.Simulated);
+      }
+    }
+  });
+
+  extend.refresh();
+  return extend;
+})();
+
+Element.hasAttribute = function(element, attribute) {
+  if (element.hasAttribute) return element.hasAttribute(attribute);
+  return Element.Methods.Simulated.hasAttribute(element, attribute);
+};
+
+Element.addMethods = function(methods) {
+  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;
+
+  if (!methods) {
+    Object.extend(Form, Form.Methods);
+    Object.extend(Form.Element, Form.Element.Methods);
+    Object.extend(Element.Methods.ByTag, {
+      "FORM":     Object.clone(Form.Methods),
+      "INPUT":    Object.clone(Form.Element.Methods),
+      "SELECT":   Object.clone(Form.Element.Methods),
+      "TEXTAREA": Object.clone(Form.Element.Methods)
+    });
+  }
+
+  if (arguments.length == 2) {
+    var tagName = methods;
+    methods = arguments[1];
+  }
+
+  if (!tagName) Object.extend(Element.Methods, methods || { });
+  else {
+    if (Object.isArray(tagName)) tagName.each(extend);
+    else extend(tagName);
+  }
+
+  function extend(tagName) {
+    tagName = tagName.toUpperCase();
+    if (!Element.Methods.ByTag[tagName])
+      Element.Methods.ByTag[tagName] = { };
+    Object.extend(Element.Methods.ByTag[tagName], methods);
+  }
+
+  function copy(methods, destination, onlyIfAbsent) {
+    onlyIfAbsent = onlyIfAbsent || false;
+    for (var property in methods) {
+      var value = methods[property];
+      if (!Object.isFunction(value)) continue;
+      if (!onlyIfAbsent || !(property in destination))
+        destination[property] = value.methodize();
+    }
+  }
+
+  function findDOMClass(tagName) {
+    var klass;
+    var trans = {
+      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
+      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
+      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
+      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
+      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
+      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
+      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
+      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
+      "FrameSet", "IFRAME": "IFrame"
+    };
+    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
+    if (window[klass]) return window[klass];
+    klass = 'HTML' + tagName + 'Element';
+    if (window[klass]) return window[klass];
+    klass = 'HTML' + tagName.capitalize() + 'Element';
+    if (window[klass]) return window[klass];
+
+    window[klass] = { };
+    window[klass].prototype = document.createElement(tagName).__proto__;
+    return window[klass];
+  }
+
+  if (F.ElementExtensions) {
+    copy(Element.Methods, HTMLElement.prototype);
+    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
+  }
+
+  if (F.SpecificElementExtensions) {
+    for (var tag in Element.Methods.ByTag) {
+      var klass = findDOMClass(tag);
+      if (Object.isUndefined(klass)) continue;
+      copy(T[tag], klass.prototype);
+    }
+  }
+
+  Object.extend(Element, Element.Methods);
+  delete Element.ByTag;
+
+  if (Element.extend.refresh) Element.extend.refresh();
+  Element.cache = { };
+};
+
+document.viewport = {
+  getDimensions: function() {
+    var dimensions = { };
+    var B = Prototype.Browser;
+    $w('width height').each(function(d) {
+      var D = d.capitalize();
+      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
+        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
+    });
+    return dimensions;
+  },
+
+  getWidth: function() {
+    return this.getDimensions().width;
+  },
+
+  getHeight: function() {
+    return this.getDimensions().height;
+  },
+
+  getScrollOffsets: function() {
+    return Element._returnOffset(
+      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
+      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
+  }
+};
+/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
+ * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
+ * license.  Please see http://www.yui-ext.com/ for more information. */
+
+var Selector = Class.create({
+  initialize: function(expression) {
+    this.expression = expression.strip();
+    this.compileMatcher();
+  },
+
+  shouldUseXPath: function() {
+    if (!Prototype.BrowserFeatures.XPath) return false;
+
+    var e = this.expression;
+
+    // Safari 3 chokes on :*-of-type and :empty
+    if (Prototype.Browser.WebKit &&
+     (e.include("-of-type") || e.include(":empty")))
+      return false;
+
+    // XPath can't do namespaced attributes, nor can it read
+    // the "checked" property from DOM nodes
+    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
+      return false;
+
+    return true;
+  },
+
+  compileMatcher: function() {
+    if (this.shouldUseXPath())
+      return this.compileXPathMatcher();
+
+    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
+        c = Selector.criteria, le, p, m;
+
+    if (Selector._cache[e]) {
+      this.matcher = Selector._cache[e];
+      return;
+    }
+
+    this.matcher = ["this.matcher = function(root) {",
+                    "var r = root, h = Selector.handlers, c = false, n;"];
+
+    while (e && le != e && (/\S/).test(e)) {
+      le = e;
+      for (var i in ps) {
+        p = ps[i];
+        if (m = e.match(p)) {
+          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
+    	      new Template(c[i]).evaluate(m));
+          e = e.replace(m[0], '');
+          break;
+        }
+      }
+    }
+
+    this.matcher.push("return h.unique(n);\n}");
+    eval(this.matcher.join('\n'));
+    Selector._cache[this.expression] = this.matcher;
+  },
+
+  compileXPathMatcher: function() {
+    var e = this.expression, ps = Selector.patterns,
+        x = Selector.xpath, le, m;
+
+    if (Selector._cache[e]) {
+      this.xpath = Selector._cache[e]; return;
+    }
+
+    this.matcher = ['.//*'];
+    while (e && le != e && (/\S/).test(e)) {
+      le = e;
+      for (var i in ps) {
+        if (m = e.match(ps[i])) {
+          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
+            new Template(x[i]).evaluate(m));
+          e = e.replace(m[0], '');
+          break;
+        }
+      }
+    }
+
+    this.xpath = this.matcher.join('');
+    Selector._cache[this.expression] = this.xpath;
+  },
+
+  findElements: function(root) {
+    root = root || document;
+    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
+    return this.matcher(root);
+  },
+
+  match: function(element) {
+    this.tokens = [];
+
+    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
+    var le, p, m;
+
+    while (e && le !== e && (/\S/).test(e)) {
+      le = e;
+      for (var i in ps) {
+        p = ps[i];
+        if (m = e.match(p)) {
+          // use the Selector.assertions methods unless the selector
+          // is too complex.
+          if (as[i]) {
+            this.tokens.push([i, Object.clone(m)]);
+            e = e.replace(m[0], '');
+          } else {
+            // reluctantly do a document-wide search
+            // and look for a match in the array
+            return this.findElements(document).include(element);
+          }
+        }
+      }
+    }
+
+    var match = true, name, matches;
+    for (var i = 0, token; token = this.tokens[i]; i++) {
+      name = token[0], matches = token[1];
+      if (!Selector.assertions[name](element, matches)) {
+        match = false; break;
+      }
+    }
+
+    return match;
+  },
+
+  toString: function() {
+    return this.expression;
+  },
+
+  inspect: function() {
+    return "#<Selector:" + this.expression.inspect() + ">";
+  }
+});
+
+Object.extend(Selector, {
+  _cache: { },
+
+  xpath: {
+    descendant:   "//*",
+    child:        "/*",
+    adjacent:     "/following-sibling::*[1]",
+    laterSibling: '/following-sibling::*',
+    tagName:      function(m) {
+      if (m[1] == '*') return '';
+      return "[local-name()='" + m[1].toLowerCase() +
+             "' or local-name()='" + m[1].toUpperCase() + "']";
+    },
+    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
+    id:           "[@id='#{1}']",
+    attrPresence: function(m) {
+      m[1] = m[1].toLowerCase();
+      return new Template("[@#{1}]").evaluate(m);
+    },
+    attr: function(m) {
+      m[1] = m[1].toLowerCase();
+      m[3] = m[5] || m[6];
+      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
+    },
+    pseudo: function(m) {
+      var h = Selector.xpath.pseudos[m[1]];
+      if (!h) return '';
+      if (Object.isFunction(h)) return h(m);
+      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
+    },
+    operators: {
+      '=':  "[@#{1}='#{3}']",
+      '!=': "[@#{1}!='#{3}']",
+      '^=': "[starts-with(@#{1}, '#{3}')]",
+      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
+      '*=': "[contains(@#{1}, '#{3}')]",
+      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
+      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
+    },
+    pseudos: {
+      'first-child': '[not(preceding-sibling::*)]',
+      'last-child':  '[not(following-sibling::*)]',
+      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
+      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
+      'checked':     "[@checked]",
+      'disabled':    "[@disabled]",
+      'enabled':     "[not(@disabled)]",
+      'not': function(m) {
+        var e = m[6], p = Selector.patterns,
+            x = Selector.xpath, le, v;
+
+        var exclusion = [];
+        while (e && le != e && (/\S/).test(e)) {
+          le = e;
+          for (var i in p) {
+            if (m = e.match(p[i])) {
+              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
+              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
+              e = e.replace(m[0], '');
+              break;
+            }
+          }
+        }
+        return "[not(" + exclusion.join(" and ") + ")]";
+      },
+      'nth-child':      function(m) {
+        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
+      },
+      'nth-last-child': function(m) {
+        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
+      },
+      'nth-of-type':    function(m) {
+        return Selector.xpath.pseudos.nth("position() ", m);
+      },
+      'nth-last-of-type': function(m) {
+        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
+      },
+      'first-of-type':  function(m) {
+        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
+      },
+      'last-of-type':   function(m) {
+        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
+      },
+      'only-of-type':   function(m) {
+        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
+      },
+      nth: function(fragment, m) {
+        var mm, formula = m[6], predicate;
+        if (formula == 'even') formula = '2n+0';
+        if (formula == 'odd')  formula = '2n+1';
+        if (mm = formula.match(/^(\d+)$/)) // digit only
+          return '[' + fragment + "= " + mm[1] + ']';
+        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
+          if (mm[1] == "-") mm[1] = -1;
+          var a = mm[1] ? Number(mm[1]) : 1;
+          var b = mm[2] ? Number(mm[2]) : 0;
+          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
+          "((#{fragment} - #{b}) div #{a} >= 0)]";
+          return new Template(predicate).evaluate({
+            fragment: fragment, a: a, b: b });
+        }
+      }
+    }
+  },
+
+  criteria: {
+    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
+    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
+    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
+    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
+    attr: function(m) {
+      m[3] = (m[5] || m[6]);
+      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
+    },
+    pseudo: function(m) {
+      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
+      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
+    },
+    descendant:   'c = "descendant";',
+    child:        'c = "child";',
+    adjacent:     'c = "adjacent";',
+    laterSibling: 'c = "laterSibling";'
+  },
+
+  patterns: {
+    // combinators must be listed first
+    // (and descendant needs to be last combinator)
+    laterSibling: /^\s*~\s*/,
+    child:        /^\s*>\s*/,
+    adjacent:     /^\s*\+\s*/,
+    descendant:   /^\s/,
+
+    // selectors follow
+    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
+    id:           /^#([\w\-\*]+)(\b|$)/,
+    className:    /^\.([\w\-\*]+)(\b|$)/,
+    pseudo:
+/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
+    attrPresence: /^\[([\w]+)\]/,
+    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
+  },
+
+  // for Selector.match and Element#match
+  assertions: {
+    tagName: function(element, matches) {
+      return matches[1].toUpperCase() == element.tagName.toUpperCase();
+    },
+
+    className: function(element, matches) {
+      return Element.hasClassName(element, matches[1]);
+    },
+
+    id: function(element, matches) {
+      return element.id === matches[1];
+    },
+
+    attrPresence: function(element, matches) {
+      return Element.hasAttribute(element, matches[1]);
+    },
+
+    attr: function(element, matches) {
+      var nodeValue = Element.readAttribute(element, matches[1]);
+      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
+    }
+  },
+
+  handlers: {
+    // UTILITY FUNCTIONS
+    // joins two collections
+    concat: function(a, b) {
+      for (var i = 0, node; node = b[i]; i++)
+        a.push(node);
+      return a;
+    },
+
+    // marks an array of nodes for counting
+    mark: function(nodes) {
+      var _true = Prototype.emptyFunction;
+      for (var i = 0, node; node = nodes[i]; i++)
+        node._countedByPrototype = _true;
+      return nodes;
+    },
+
+    unmark: function(nodes) {
+      for (var i = 0, node; node = nodes[i]; i++)
+        node._countedByPrototype = undefined;
+      return nodes;
+    },
+
+    // mark each child node with its position (for nth calls)
+    // "ofType" flag indicates whether we're indexing for nth-of-type
+    // rather than nth-child
+    index: function(parentNode, reverse, ofType) {
+      parentNode._countedByPrototype = Prototype.emptyFunction;
+      if (reverse) {
+        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
+          var node = nodes[i];
+          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
+        }
+      } else {
+        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
+          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
+      }
+    },
+
+    // filters out duplicates and extends all nodes
+    unique: function(nodes) {
+      if (nodes.length == 0) return nodes;
+      var results = [], n;
+      for (var i = 0, l = nodes.length; i < l; i++)
+        if (!(n = nodes[i])._countedByPrototype) {
+          n._countedByPrototype = Prototype.emptyFunction;
+          results.push(Element.extend(n));
+        }
+      return Selector.handlers.unmark(results);
+    },
+
+    // COMBINATOR FUNCTIONS
+    descendant: function(nodes) {
+      var h = Selector.handlers;
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        h.concat(results, node.getElementsByTagName('*'));
+      return results;
+    },
+
+    child: function(nodes) {
+      var h = Selector.handlers;
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        for (var j = 0, child; child = node.childNodes[j]; j++)
+          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
+      }
+      return results;
+    },
+
+    adjacent: function(nodes) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        var next = this.nextElementSibling(node);
+        if (next) results.push(next);
+      }
+      return results;
+    },
+
+    laterSibling: function(nodes) {
+      var h = Selector.handlers;
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        h.concat(results, Element.nextSiblings(node));
+      return results;
+    },
+
+    nextElementSibling: function(node) {
+      while (node = node.nextSibling)
+	      if (node.nodeType == 1) return node;
+      return null;
+    },
+
+    previousElementSibling: function(node) {
+      while (node = node.previousSibling)
+        if (node.nodeType == 1) return node;
+      return null;
+    },
+
+    // TOKEN FUNCTIONS
+    tagName: function(nodes, root, tagName, combinator) {
+      var uTagName = tagName.toUpperCase();
+      var results = [], h = Selector.handlers;
+      if (nodes) {
+        if (combinator) {
+          // fastlane for ordinary descendant combinators
+          if (combinator == "descendant") {
+            for (var i = 0, node; node = nodes[i]; i++)
+              h.concat(results, node.getElementsByTagName(tagName));
+            return results;
+          } else nodes = this[combinator](nodes);
+          if (tagName == "*") return nodes;
+        }
+        for (var i = 0, node; node = nodes[i]; i++)
+          if (node.tagName.toUpperCase() === uTagName) results.push(node);
+        return results;
+      } else return root.getElementsByTagName(tagName);
+    },
+
+    id: function(nodes, root, id, combinator) {
+      var targetNode = $(id), h = Selector.handlers;
+      if (!targetNode) return [];
+      if (!nodes && root == document) return [targetNode];
+      if (nodes) {
+        if (combinator) {
+          if (combinator == 'child') {
+            for (var i = 0, node; node = nodes[i]; i++)
+              if (targetNode.parentNode == node) return [targetNode];
+          } else if (combinator == 'descendant') {
+            for (var i = 0, node; node = nodes[i]; i++)
+              if (Element.descendantOf(targetNode, node)) return [targetNode];
+          } else if (combinator == 'adjacent') {
+            for (var i = 0, node; node = nodes[i]; i++)
+              if (Selector.handlers.previousElementSibling(targetNode) == node)
+                return [targetNode];
+          } else nodes = h[combinator](nodes);
+        }
+        for (var i = 0, node; node = nodes[i]; i++)
+          if (node == targetNode) return [targetNode];
+        return [];
+      }
+      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
+    },
+
+    className: function(nodes, root, className, combinator) {
+      if (nodes && combinator) nodes = this[combinator](nodes);
+      return Selector.handlers.byClassName(nodes, root, className);
+    },
+
+    byClassName: function(nodes, root, className) {
+      if (!nodes) nodes = Selector.handlers.descendant([root]);
+      var needle = ' ' + className + ' ';
+      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
+        nodeClassName = node.className;
+        if (nodeClassName.length == 0) continue;
+        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
+          results.push(node);
+      }
+      return results;
+    },
+
+    attrPresence: function(nodes, root, attr, combinator) {
+      if (!nodes) nodes = root.getElementsByTagName("*");
+      if (nodes && combinator) nodes = this[combinator](nodes);
+      var results = [];
+      for (var i = 0, node; node = nodes[i]; i++)
+        if (Element.hasAttribute(node, attr)) results.push(node);
+      return results;
+    },
+
+    attr: function(nodes, root, attr, value, operator, combinator) {
+      if (!nodes) nodes = root.getElementsByTagName("*");
+      if (nodes && combinator) nodes = this[combinator](nodes);
+      var handler = Selector.operators[operator], results = [];
+      for (var i = 0, node; node = nodes[i]; i++) {
+        var nodeValue = Element.readAttribute(node, attr);
+        if (nodeValue === null) continue;
+        if (handler(nodeValue, value)) results.push(node);
+      }
+      return results;
+    },
+
+    pseudo: function(nodes, name, value, root, combinator) {
+      if (nodes && combinator) nodes = this[combinator](nodes);
+      if (!nodes) nodes = root.getElementsByTagName("*");
+      return Selector.pseudos[name](nodes, value, root);
+    }
+  },
+
+  pseudos: {
+    'first-child': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        if (Selector.handlers.previousElementSibling(node)) continue;
+          results.push(node);
+      }
+      return results;
+    },
+    'last-child': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        if (Selector.handlers.nextElementSibling(node)) continue;
+          results.push(node);
+      }
+      return results;
+    },
+    'only-child': function(nodes, value, root) {
+      var h = Selector.handlers;
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
+          results.push(node);
+      return results;
+    },
+    'nth-child':        function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, formula, root);
+    },
+    'nth-last-child':   function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, formula, root, true);
+    },
+    'nth-of-type':      function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, formula, root, false, true);
+    },
+    'nth-last-of-type': function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, formula, root, true, true);
+    },
+    'first-of-type':    function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, "1", root, false, true);
+    },
+    'last-of-type':     function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, "1", root, true, true);
+    },
+    'only-of-type':     function(nodes, formula, root) {
+      var p = Selector.pseudos;
+      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
+    },
+
+    // handles the an+b logic
+    getIndices: function(a, b, total) {
+      if (a == 0) return b > 0 ? [b] : [];
+      return $R(1, total).inject([], function(memo, i) {
+        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
+        return memo;
+      });
+    },
+
+    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
+    nth: function(nodes, formula, root, reverse, ofType) {
+      if (nodes.length == 0) return [];
+      if (formula == 'even') formula = '2n+0';
+      if (formula == 'odd')  formula = '2n+1';
+      var h = Selector.handlers, results = [], indexed = [], m;
+      h.mark(nodes);
+      for (var i = 0, node; node = nodes[i]; i++) {
+        if (!node.parentNode._countedByPrototype) {
+          h.index(node.parentNode, reverse, ofType);
+          indexed.push(node.parentNode);
+        }
+      }
+      if (formula.match(/^\d+$/)) { // just a number
+        formula = Number(formula);
+        for (var i = 0, node; node = nodes[i]; i++)
+          if (node.nodeIndex == formula) results.push(node);
+      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
+        if (m[1] == "-") m[1] = -1;
+        var a = m[1] ? Number(m[1]) : 1;
+        var b = m[2] ? Number(m[2]) : 0;
+        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
+        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
+          for (var j = 0; j < l; j++)
+            if (node.nodeIndex == indices[j]) results.push(node);
+        }
+      }
+      h.unmark(nodes);
+      h.unmark(indexed);
+      return results;
+    },
+
+    'empty': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        // IE treats comments as element nodes
+        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
+        results.push(node);
+      }
+      return results;
+    },
+
+    'not': function(nodes, selector, root) {
+      var h = Selector.handlers, selectorType, m;
+      var exclusions = new Selector(selector).findElements(root);
+      h.mark(exclusions);
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (!node._countedByPrototype) results.push(node);
+      h.unmark(exclusions);
+      return results;
+    },
+
+    'enabled': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (!node.disabled) results.push(node);
+      return results;
+    },
+
+    'disabled': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (node.disabled) results.push(node);
+      return results;
+    },
+
+    'checked': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (node.checked) results.push(node);
+      return results;
+    }
+  },
+
+  operators: {
+    '=':  function(nv, v) { return nv == v; },
+    '!=': function(nv, v) { return nv != v; },
+    '^=': function(nv, v) { return nv.startsWith(v); },
+    '$=': function(nv, v) { return nv.endsWith(v); },
+    '*=': function(nv, v) { return nv.include(v); },
+    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
+    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
+  },
+
+  split: function(expression) {
+    var expressions = [];
+    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
+      expressions.push(m[1].strip());
+    });
+    return expressions;
+  },
+
+  matchElements: function(elements, expression) {
+    var matches = $$(expression), h = Selector.handlers;
+    h.mark(matches);
+    for (var i = 0, results = [], element; element = elements[i]; i++)
+      if (element._countedByPrototype) results.push(element);
+    h.unmark(matches);
+    return results;
+  },
+
+  findElement: function(elements, expression, index) {
+    if (Object.isNumber(expression)) {
+      index = expression; expression = false;
+    }
+    return Selector.matchElements(elements, expression || '*')[index || 0];
+  },
+
+  findChildElements: function(element, expressions) {
+    expressions = Selector.split(expressions.join(','));
+    var results = [], h = Selector.handlers;
+    for (var i = 0, l = expressions.length, selector; i < l; i++) {
+      selector = new Selector(expressions[i].strip());
+      h.concat(results, selector.findElements(element));
+    }
+    return (l > 1) ? h.unique(results) : results;
+  }
+});
+
+if (Prototype.Browser.IE) {
+  Object.extend(Selector.handlers, {
+    // IE returns comment nodes on getElementsByTagName("*").
+    // Filter them out.
+    concat: function(a, b) {
+      for (var i = 0, node; node = b[i]; i++)
+        if (node.tagName !== "!") a.push(node);
+      return a;
+    },
+
+    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
+    unmark: function(nodes) {
+      for (var i = 0, node; node = nodes[i]; i++)
+        node.removeAttribute('_countedByPrototype');
+      return nodes;
+    }
+  });
+}
+
+function $$() {
+  return Selector.findChildElements(document, $A(arguments));
+}
+var Form = {
+  reset: function(form) {
+    $(form).reset();
+    return form;
+  },
+
+  serializeElements: function(elements, options) {
+    if (typeof options != 'object') options = { hash: !!options };
+    else if (Object.isUndefined(options.hash)) options.hash = true;
+    var key, value, submitted = false, submit = options.submit;
+
+    var data = elements.inject({ }, function(result, element) {
+      if (!element.disabled && element.name) {
+        key = element.name; value = $(element).getValue();
+        if (value != null && (element.type != 'submit' || (!submitted &&
+            submit !== false && (!submit || key == submit) && (submitted = true)))) {
+          if (key in result) {
+            // a key is already present; construct an array of values
+            if (!Object.isArray(result[key])) result[key] = [result[key]];
+            result[key].push(value);
+          }
+          else result[key] = value;
+        }
+      }
+      return result;
+    });
+
+    return options.hash ? data : Object.toQueryString(data);
+  }
+};
+
+Form.Methods = {
+  serialize: function(form, options) {
+    return Form.serializeElements(Form.getElements(form), options);
+  },
+
+  getElements: function(form) {
+    return $A($(form).getElementsByTagName('*')).inject([],
+      function(elements, child) {
+        if (Form.Element.Serializers[child.tagName.toLowerCase()])
+          elements.push(Element.extend(child));
+        return elements;
+      }
+    );
+  },
+
+  getInputs: function(form, typeName, name) {
+    form = $(form);
+    var inputs = form.getElementsByTagName('input');
+
+    if (!typeName && !name) return $A(inputs).map(Element.extend);
+
+    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
+      var input = inputs[i];
+      if ((typeName && input.type != typeName) || (name && input.name != name))
+        continue;
+      matchingInputs.push(Element.extend(input));
+    }
+
+    return matchingInputs;
+  },
+
+  disable: function(form) {
+    form = $(form);
+    Form.getElements(form).invoke('disable');
+    return form;
+  },
+
+  enable: function(form) {
+    form = $(form);
+    Form.getElements(form).invoke('enable');
+    return form;
+  },
+
+  findFirstElement: function(form) {
+    var elements = $(form).getElements().findAll(function(element) {
+      return 'hidden' != element.type && !element.disabled;
+    });
+    var firstByIndex = elements.findAll(function(element) {
+      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
+    }).sortBy(function(element) { return element.tabIndex }).first();
+
+    return firstByIndex ? firstByIndex : elements.find(function(element) {
+      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
+    });
+  },
+
+  focusFirstElement: function(form) {
+    form = $(form);
+    form.findFirstElement().activate();
+    return form;
+  },
+
+  request: function(form, options) {
+    form = $(form), options = Object.clone(options || { });
+
+    var params = options.parameters, action = form.readAttribute('action') || '';
+    if (action.blank()) action = window.location.href;
+    options.parameters = form.serialize(true);
+
+    if (params) {
+      if (Object.isString(params)) params = params.toQueryParams();
+      Object.extend(options.parameters, params);
+    }
+
+    if (form.hasAttribute('method') && !options.method)
+      options.method = form.method;
+
+    return new Ajax.Request(action, options);
+  }
+};
+
+/*--------------------------------------------------------------------------*/
+
+Form.Element = {
+  focus: function(element) {
+    $(element).focus();
+    return element;
+  },
+
+  select: function(element) {
+    $(element).select();
+    return element;
+  }
+};
+
+Form.Element.Methods = {
+  serialize: function(element) {
+    element = $(element);
+    if (!element.disabled && element.name) {
+      var value = element.getValue();
+      if (value != undefined) {
+        var pair = { };
+        pair[element.name] = value;
+        return Object.toQueryString(pair);
+      }
+    }
+    return '';
+  },
+
+  getValue: function(element) {
+    element = $(element);
+    var method = element.tagName.toLowerCase();
+    return Form.Element.Serializers[method](element);
+  },
+
+  setValue: function(element, value) {
+    element = $(element);
+    var method = element.tagName.toLowerCase();
+    Form.Element.Serializers[method](element, value);
+    return element;
+  },
+
+  clear: function(element) {
+    $(element).value = '';
+    return element;
+  },
+
+  present: function(element) {
+    return $(element).value != '';
+  },
+
+  activate: function(element) {
+    element = $(element);
+    try {
+      element.focus();
+      if (element.select && (element.tagName.toLowerCase() != 'input' ||
+          !['button', 'reset', 'submit'].include(element.type)))
+        element.select();
+    } catch (e) { }
+    return element;
+  },
+
+  disable: function(element) {
+    element = $(element);
+    element.blur();
+    element.disabled = true;
+    return element;
+  },
+
+  enable: function(element) {
+    element = $(element);
+    element.disabled = false;
+    return element;
+  }
+};
+
+/*--------------------------------------------------------------------------*/
+
+var Field = Form.Element;
+var $F = Form.Element.Methods.getValue;
+
+/*--------------------------------------------------------------------------*/
+
+Form.Element.Serializers = {
+  input: function(element, value) {
+    switch (element.type.toLowerCase()) {
+      case 'checkbox':
+      case 'radio':
+        return Form.Element.Serializers.inputSelector(element, value);
+      default:
+        return Form.Element.Serializers.textarea(element, value);
+    }
+  },
+
+  inputSelector: function(element, value) {
+    if (Object.isUndefined(value)) return element.checked ? element.value : null;
+    else element.checked = !!value;
+  },
+
+  textarea: function(element, value) {
+    if (Object.isUndefined(value)) return element.value;
+    else element.value = value;
+  },
+
+  select: function(element, index) {
+    if (Object.isUndefined(index))
+      return this[element.type == 'select-one' ?
+        'selectOne' : 'selectMany'](element);
+    else {
+      var opt, value, single = !Object.isArray(index);
+      for (var i = 0, length = element.length; i < length; i++) {
+        opt = element.options[i];
+        value = this.optionValue(opt);
+        if (single) {
+          if (value == index) {
+            opt.selected = true;
+            return;
+          }
+        }
+        else opt.selected = index.include(value);
+      }
+    }
+  },
+
+  selectOne: function(element) {
+    var index = element.selectedIndex;
+    return index >= 0 ? this.optionValue(element.options[index]) : null;
+  },
+
+  selectMany: function(element) {
+    var values, length = element.length;
+    if (!length) return null;
+
+    for (var i = 0, values = []; i < length; i++) {
+      var opt = element.options[i];
+      if (opt.selected) values.push(this.optionValue(opt));
+    }
+    return values;
+  },
+
+  optionValue: function(opt) {
+    // extend element because hasAttribute may not be native
+    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
+  }
+};
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
+  initialize: function($super, element, frequency, callback) {
+    $super(callback, frequency);
+    this.element   = $(element);
+    this.lastValue = this.getValue();
+  },
+
+  execute: function() {
+    var value = this.getValue();
+    if (Object.isString(this.lastValue) && Object.isString(value) ?
+        this.lastValue != value : String(this.lastValue) != String(value)) {
+      this.callback(this.element, value);
+      this.lastValue = value;
+    }
+  }
+});
+
+Form.Element.Observer = Class.create(Abstract.TimedObserver, {
+  getValue: function() {
+    return Form.Element.getValue(this.element);
+  }
+});
+
+Form.Observer = Class.create(Abstract.TimedObserver, {
+  getValue: function() {
+    return Form.serialize(this.element);
+  }
+});
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.EventObserver = Class.create({
+  initialize: function(element, callback) {
+    this.element  = $(element);
+    this.callback = callback;
+
+    this.lastValue = this.getValue();
+    if (this.element.tagName.toLowerCase() == 'form')
+      this.registerFormCallbacks();
+    else
+      this.registerCallback(this.element);
+  },
+
+  onElementEvent: function() {
+    var value = this.getValue();
+    if (this.lastValue != value) {
+      this.callback(this.element, value);
+      this.lastValue = value;
+    }
+  },
+
+  registerFormCallbacks: function() {
+    Form.getElements(this.element).each(this.registerCallback, this);
+  },
+
+  registerCallback: function(element) {
+    if (element.type) {
+      switch (element.type.toLowerCase()) {
+        case 'checkbox':
+        case 'radio':
+          Event.observe(element, 'click', this.onElementEvent.bind(this));
+          break;
+        default:
+          Event.observe(element, 'change', this.onElementEvent.bind(this));
+          break;
+      }
+    }
+  }
+});
+
+Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
+  getValue: function() {
+    return Form.Element.getValue(this.element);
+  }
+});
+
+Form.EventObserver = Class.create(Abstract.EventObserver, {
+  getValue: function() {
+    return Form.serialize(this.element);
+  }
+});
+if (!window.Event) var Event = { };
+
+Object.extend(Event, {
+  KEY_BACKSPACE: 8,
+  KEY_TAB:       9,
+  KEY_RETURN:   13,
+  KEY_ESC:      27,
+  KEY_LEFT:     37,
+  KEY_UP:       38,
+  KEY_RIGHT:    39,
+  KEY_DOWN:     40,
+  KEY_DELETE:   46,
+  KEY_HOME:     36,
+  KEY_END:      35,
+  KEY_PAGEUP:   33,
+  KEY_PAGEDOWN: 34,
+  KEY_INSERT:   45,
+
+  cache: { },
+
+  relatedTarget: function(event) {
+    var element;
+    switch(event.type) {
+      case 'mouseover': element = event.fromElement; break;
+      case 'mouseout':  element = event.toElement;   break;
+      default: return null;
+    }
+    return Element.extend(element);
+  }
+});
+
+Event.Methods = (function() {
+  var isButton;
+
+  if (Prototype.Browser.IE) {
+    var buttonMap = { 0: 1, 1: 4, 2: 2 };
+    isButton = function(event, code) {
+      return event.button == buttonMap[code];
+    };
+
+  } else if (Prototype.Browser.WebKit) {
+    isButton = function(event, code) {
+      switch (code) {
+        case 0: return event.which == 1 && !event.metaKey;
+        case 1: return event.which == 1 && event.metaKey;
+        default: return false;
+      }
+    };
+
+  } else {
+    isButton = function(event, code) {
+      return event.which ? (event.which === code + 1) : (event.button === code);
+    };
+  }
+
+  return {
+    isLeftClick:   function(event) { return isButton(event, 0) },
+    isMiddleClick: function(event) { return isButton(event, 1) },
+    isRightClick:  function(event) { return isButton(event, 2) },
+
+    element: function(event) {
+      var node = Event.extend(event).target;
+      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
+    },
+
+    findElement: function(event, expression) {
+      var element = Event.element(event);
+      if (!expression) return element;
+      var elements = [element].concat(element.ancestors());
+      return Selector.findElement(elements, expression, 0);
+    },
+
+    pointer: function(event) {
+      return {
+        x: event.pageX || (event.clientX +
+          (document.documentElement.scrollLeft || document.body.scrollLeft)),
+        y: event.pageY || (event.clientY +
+          (document.documentElement.scrollTop || document.body.scrollTop))
+      };
+    },
+
+    pointerX: function(event) { return Event.pointer(event).x },
+    pointerY: function(event) { return Event.pointer(event).y },
+
+    stop: function(event) {
+      Event.extend(event);
+      event.preventDefault();
+      event.stopPropagation();
+      event.stopped = true;
+    }
+  };
+})();
+
+Event.extend = (function() {
+  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
+    m[name] = Event.Methods[name].methodize();
+    return m;
+  });
+
+  if (Prototype.Browser.IE) {
+    Object.extend(methods, {
+      stopPropagation: function() { this.cancelBubble = true },
+      preventDefault:  function() { this.returnValue = false },
+      inspect: function() { return "[object Event]" }
+    });
+
+    return function(event) {
+      if (!event) return false;
+      if (event._extendedByPrototype) return event;
+
+      event._extendedByPrototype = Prototype.emptyFunction;
+      var pointer = Event.pointer(event);
+      Object.extend(event, {
+        target: event.srcElement,
+        relatedTarget: Event.relatedTarget(event),
+        pageX:  pointer.x,
+        pageY:  pointer.y
+      });
+      return Object.extend(event, methods);
+    };
+
+  } else {
+    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
+    Object.extend(Event.prototype, methods);
+    return Prototype.K;
+  }
+})();
+
+Object.extend(Event, (function() {
+  var cache = Event.cache;
+
+  function getEventID(element) {
+    if (element._prototypeEventID) return element._prototypeEventID[0];
+    arguments.callee.id = arguments.callee.id || 1;
+    return element._prototypeEventID = [++arguments.callee.id];
+  }
+
+  function getDOMEventName(eventName) {
+    if (eventName && eventName.include(':')) return "dataavailable";
+    return eventName;
+  }
+
+  function getCacheForID(id) {
+    return cache[id] = cache[id] || { };
+  }
+
+  function getWrappersForEventName(id, eventName) {
+    var c = getCacheForID(id);
+    return c[eventName] = c[eventName] || [];
+  }
+
+  function createWrapper(element, eventName, handler) {
+    var id = getEventID(element);
+    var c = getWrappersForEventName(id, eventName);
+    if (c.pluck("handler").include(handler)) return false;
+
+    var wrapper = function(event) {
+      if (!Event || !Event.extend ||
+        (event.eventName && event.eventName != eventName))
+          return false;
+
+      Event.extend(event);
+      handler.call(element, event);
+    };
+
+    wrapper.handler = handler;
+    c.push(wrapper);
+    return wrapper;
+  }
+
+  function findWrapper(id, eventName, handler) {
+    var c = getWrappersForEventName(id, eventName);
+    return c.find(function(wrapper) { return wrapper.handler == handler });
+  }
+
+  function destroyWrapper(id, eventName, handler) {
+    var c = getCacheForID(id);
+    if (!c[eventName]) return false;
+    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
+  }
+
+  function destroyCache() {
+    for (var id in cache)
+      for (var eventName in cache[id])
+        cache[id][eventName] = null;
+  }
+
+  if (window.attachEvent) {
+    window.attachEvent("onunload", destroyCache);
+  }
+
+  return {
+    observe: function(element, eventName, handler) {
+      element = $(element);
+      var name = getDOMEventName(eventName);
+
+      var wrapper = createWrapper(element, eventName, handler);
+      if (!wrapper) return element;
+
+      if (element.addEventListener) {
+        element.addEventListener(name, wrapper, false);
+      } else {
+        element.attachEvent("on" + name, wrapper);
+      }
+
+      return element;
+    },
+
+    stopObserving: function(element, eventName, handler) {
+      element = $(element);
+      var id = getEventID(element), name = getDOMEventName(eventName);
+
+      if (!handler && eventName) {
+        getWrappersForEventName(id, eventName).each(function(wrapper) {
+          element.stopObserving(eventName, wrapper.handler);
+        });
+        return element;
+
+      } else if (!eventName) {
+        Object.keys(getCacheForID(id)).each(function(eventName) {
+          element.stopObserving(eventName);
+        });
+        return element;
+      }
+
+      var wrapper = findWrapper(id, eventName, handler);
+      if (!wrapper) return element;
+
+      if (element.removeEventListener) {
+        element.removeEventListener(name, wrapper, false);
+      } else {
+        element.detachEvent("on" + name, wrapper);
+      }
+
+      destroyWrapper(id, eventName, handler);
+
+      return element;
+    },
+
+    fire: function(element, eventName, memo) {
+      element = $(element);
+      if (element == document && document.createEvent && !element.dispatchEvent)
+        element = document.documentElement;
+
+      var event;
+      if (document.createEvent) {
+        event = document.createEvent("HTMLEvents");
+        event.initEvent("dataavailable", true, true);
+      } else {
+        event = document.createEventObject();
+        event.eventType = "ondataavailable";
+      }
+
+      event.eventName = eventName;
+      event.memo = memo || { };
+
+      if (document.createEvent) {
+        element.dispatchEvent(event);
+      } else {
+        element.fireEvent(event.eventType, event);
+      }
+
+      return Event.extend(event);
+    }
+  };
+})());
+
+Object.extend(Event, Event.Methods);
+
+Element.addMethods({
+  fire:          Event.fire,
+  observe:       Event.observe,
+  stopObserving: Event.stopObserving
+});
+
+Object.extend(document, {
+  fire:          Element.Methods.fire.methodize(),
+  observe:       Element.Methods.observe.methodize(),
+  stopObserving: Element.Methods.stopObserving.methodize(),
+  loaded:        false
+});
+
+(function() {
+  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
+     Matthias Miller, Dean Edwards and John Resig. */
+
+  var timer;
+
+  function fireContentLoadedEvent() {
+    if (document.loaded) return;
+    if (timer) window.clearInterval(timer);
+    document.fire("dom:loaded");
+    document.loaded = true;
+  }
+
+  if (document.addEventListener) {
+    if (Prototype.Browser.WebKit) {
+      timer = window.setInterval(function() {
+        if (/loaded|complete/.test(document.readyState))
+          fireContentLoadedEvent();
+      }, 0);
+
+      Event.observe(window, "load", fireContentLoadedEvent);
+
+    } else {
+      document.addEventListener("DOMContentLoaded",
+        fireContentLoadedEvent, false);
+    }
+
+  } else {
+    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
+    $("__onDOMContentLoaded").onreadystatechange = function() {
+      if (this.readyState == "complete") {
+        this.onreadystatechange = null;
+        fireContentLoadedEvent();
+      }
+    };
+  }
+})();
+/*------------------------------- DEPRECATED -------------------------------*/
+
+Hash.toQueryString = Object.toQueryString;
+
+var Toggle = { display: Element.toggle };
+
+Element.Methods.childOf = Element.Methods.descendantOf;
+
+var Insertion = {
+  Before: function(element, content) {
+    return Element.insert(element, {before:content});
+  },
+
+  Top: function(element, content) {
+    return Element.insert(element, {top:content});
+  },
+
+  Bottom: function(element, content) {
+    return Element.insert(element, {bottom:content});
+  },
+
+  After: function(element, content) {
+    return Element.insert(element, {after:content});
+  }
+};
+
+var $continue = new Error('"throw $continue" is deprecated, use "return" instead');
+
+// This should be moved to script.aculo.us; notice the deprecated methods
+// further below, that map to the newer Element methods.
+var Position = {
+  // set to true if needed, warning: firefox performance problems
+  // NOT neeeded for page scrolling, only if draggable contained in
+  // scrollable elements
+  includeScrollOffsets: false,
+
+  // must be called before calling withinIncludingScrolloffset, every time the
+  // page is scrolled
+  prepare: function() {
+    this.deltaX =  window.pageXOffset
+                || document.documentElement.scrollLeft
+                || document.body.scrollLeft
+                || 0;
+    this.deltaY =  window.pageYOffset
+                || document.documentElement.scrollTop
+                || document.body.scrollTop
+                || 0;
+  },
+
+  // caches x/y coordinate pair to use with overlap
+  within: function(element, x, y) {
+    if (this.includeScrollOffsets)
+      return this.withinIncludingScrolloffsets(element, x, y);
+    this.xcomp = x;
+    this.ycomp = y;
+    this.offset = Element.cumulativeOffset(element);
+
+    return (y >= this.offset[1] &&
+            y <  this.offset[1] + element.offsetHeight &&
+            x >= this.offset[0] &&
+            x <  this.offset[0] + element.offsetWidth);
+  },
+
+  withinIncludingScrolloffsets: function(element, x, y) {
+    var offsetcache = Element.cumulativeScrollOffset(element);
+
+    this.xcomp = x + offsetcache[0] - this.deltaX;
+    this.ycomp = y + offsetcache[1] - this.deltaY;
+    this.offset = Element.cumulativeOffset(element);
+
+    return (this.ycomp >= this.offset[1] &&
+            this.ycomp <  this.offset[1] + element.offsetHeight &&
+            this.xcomp >= this.offset[0] &&
+            this.xcomp <  this.offset[0] + element.offsetWidth);
+  },
+
+  // within must be called directly before
+  overlap: function(mode, element) {
+    if (!mode) return 0;
+    if (mode == 'vertical')
+      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
+        element.offsetHeight;
+    if (mode == 'horizontal')
+      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
+        element.offsetWidth;
+  },
+
+  // Deprecation layer -- use newer Element methods now (1.5.2).
+
+  cumulativeOffset: Element.Methods.cumulativeOffset,
+
+  positionedOffset: Element.Methods.positionedOffset,
+
+  absolutize: function(element) {
+    Position.prepare();
+    return Element.absolutize(element);
+  },
+
+  relativize: function(element) {
+    Position.prepare();
+    return Element.relativize(element);
+  },
+
+  realOffset: Element.Methods.cumulativeScrollOffset,
+
+  offsetParent: Element.Methods.getOffsetParent,
+
+  page: Element.Methods.viewportOffset,
+
+  clone: function(source, target, options) {
+    options = options || { };
+    return Element.clonePosition(target, source, options);
+  }
+};
+
+/*--------------------------------------------------------------------------*/
+
+if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
+  function iter(name) {
+    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
+  }
+
+  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
+  function(element, className) {
+    className = className.toString().strip();
+    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
+    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
+  } : function(element, className) {
+    className = className.toString().strip();
+    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
+    if (!classNames && !className) return elements;
+
+    var nodes = $(element).getElementsByTagName('*');
+    className = ' ' + className + ' ';
+
+    for (var i = 0, child, cn; child = nodes[i]; i++) {
+      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
+          (classNames && classNames.all(function(name) {
+            return !name.toString().blank() && cn.include(' ' + name + ' ');
+          }))))
+        elements.push(Element.extend(child));
+    }
+    return elements;
+  };
+
+  return function(className, parentElement) {
+    return $(parentElement || document.body).getElementsByClassName(className);
+  };
+}(Element.Methods);
+
+/*--------------------------------------------------------------------------*/
+
+Element.ClassNames = Class.create();
+Element.ClassNames.prototype = {
+  initialize: function(element) {
+    this.element = $(element);
+  },
+
+  _each: function(iterator) {
+    this.element.className.split(/\s+/).select(function(name) {
+      return name.length > 0;
+    })._each(iterator);
+  },
+
+  set: function(className) {
+    this.element.className = className;
+  },
+
+  add: function(classNameToAdd) {
+    if (this.include(classNameToAdd)) return;
+    this.set($A(this).concat(classNameToAdd).join(' '));
+  },
+
+  remove: function(classNameToRemove) {
+    if (!this.include(classNameToRemove)) return;
+    this.set($A(this).without(classNameToRemove).join(' '));
+  },
+
+  toString: function() {
+    return $A(this).join(' ');
+  }
+};
+
+Object.extend(Element.ClassNames.prototype, Enumerable);
+
+/*--------------------------------------------------------------------------*/
+
+Element.addMethods();
\ No newline at end of file
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/scriptaculous.js b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/scriptaculous.js
new file mode 100644
index 0000000..6cfe36e
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/scriptaculous.js
@@ -0,0 +1,58 @@
+// script.aculo.us scriptaculous.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// 
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+// For details, see the script.aculo.us web site: http://script.aculo.us/
+
+var Scriptaculous = {
+  Version: '1.8.1',
+  require: function(libraryName) {
+    // inserting via DOM fails in Safari 2.0, so brute force approach
+    document.write('<script type="text/javascript" src="'+libraryName+'"><\/script>');
+  },
+  REQUIRED_PROTOTYPE: '1.6.0',
+  load: function() {
+    function convertVersionString(versionString){
+      var r = versionString.split('.');
+      return parseInt(r[0])*100000 + parseInt(r[1])*1000 + parseInt(r[2]);
+    }
+ 
+    if((typeof Prototype=='undefined') || 
+       (typeof Element == 'undefined') || 
+       (typeof Element.Methods=='undefined') ||
+       (convertVersionString(Prototype.Version) < 
+        convertVersionString(Scriptaculous.REQUIRED_PROTOTYPE)))
+       throw("script.aculo.us requires the Prototype JavaScript framework >= " +
+        Scriptaculous.REQUIRED_PROTOTYPE);
+    
+    $A(document.getElementsByTagName("script")).findAll( function(s) {
+      return (s.src && s.src.match(/scriptaculous\.js(\?.*)?$/))
+    }).each( function(s) {
+      var path = s.src.replace(/scriptaculous\.js(\?.*)?$/,'');
+      var includes = s.src.match(/\?.*load=([a-z,]*)/);
+      (includes ? includes[1] : 'builder,effects,dragdrop,controls,slider,sound').split(',').each(
+       function(include) { Scriptaculous.require(path+include+'.js') });
+    });
+  }
+}
+
+Scriptaculous.load();
\ No newline at end of file
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/slider.js b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/slider.js
new file mode 100644
index 0000000..cc46fe3
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/slider.js
@@ -0,0 +1,275 @@
+// script.aculo.us slider.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
+
+// Copyright (c) 2005-2007 Marty Haught, Thomas Fuchs 
+//
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
+
+if (!Control) var Control = { };
+
+// options:
+//  axis: 'vertical', or 'horizontal' (default)
+//
+// callbacks:
+//  onChange(value)
+//  onSlide(value)
+Control.Slider = Class.create({
+  initialize: function(handle, track, options) {
+    var slider = this;
+    
+    if (Object.isArray(handle)) {
+      this.handles = handle.collect( function(e) { return $(e) });
+    } else {
+      this.handles = [$(handle)];
+    }
+    
+    this.track   = $(track);
+    this.options = options || { };
+
+    this.axis      = this.options.axis || 'horizontal';
+    this.increment = this.options.increment || 1;
+    this.step      = parseInt(this.options.step || '1');
+    this.range     = this.options.range || $R(0,1);
+    
+    this.value     = 0; // assure backwards compat
+    this.values    = this.handles.map( function() { return 0 });
+    this.spans     = this.options.spans ? this.options.spans.map(function(s){ return $(s) }) : false;
+    this.options.startSpan = $(this.options.startSpan || null);
+    this.options.endSpan   = $(this.options.endSpan || null);
+
+    this.restricted = this.options.restricted || false;
+
+    this.maximum   = this.options.maximum || this.range.end;
+    this.minimum   = this.options.minimum || this.range.start;
+
+    // Will be used to align the handle onto the track, if necessary
+    this.alignX = parseInt(this.options.alignX || '0');
+    this.alignY = parseInt(this.options.alignY || '0');
+    
+    this.trackLength = this.maximumOffset() - this.minimumOffset();
+
+    this.handleLength = this.isVertical() ? 
+      (this.handles[0].offsetHeight != 0 ? 
+        this.handles[0].offsetHeight : this.handles[0].style.height.replace(/px$/,"")) : 
+      (this.handles[0].offsetWidth != 0 ? this.handles[0].offsetWidth : 
+        this.handles[0].style.width.replace(/px$/,""));
+
+    this.active   = false;
+    this.dragging = false;
+    this.disabled = false;
+
+    if (this.options.disabled) this.setDisabled();
+
+    // Allowed values array
+    this.allowedValues = this.options.values ? this.options.values.sortBy(Prototype.K) : false;
+    if (this.allowedValues) {
+      this.minimum = this.allowedValues.min();
+      this.maximum = this.allowedValues.max();
+    }
+
+    this.eventMouseDown = this.startDrag.bindAsEventListener(this);
+    this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
+    this.eventMouseMove = this.update.bindAsEventListener(this);
+
+    // Initialize handles in reverse (make sure first handle is active)
+    this.handles.each( function(h,i) {
+      i = slider.handles.length-1-i;
+      slider.setValue(parseFloat(
+        (Object.isArray(slider.options.sliderValue) ? 
+          slider.options.sliderValue[i] : slider.options.sliderValue) || 
+         slider.range.start), i);
+      h.makePositioned().observe("mousedown", slider.eventMouseDown);
+    });
+    
+    this.track.observe("mousedown", this.eventMouseDown);
+    document.observe("mouseup", this.eventMouseUp);
+    document.observe("mousemove", this.eventMouseMove);
+    
+    this.initialized = true;
+  },
+  dispose: function() {
+    var slider = this;    
+    Event.stopObserving(this.track, "mousedown", this.eventMouseDown);
+    Event.stopObserving(document, "mouseup", this.eventMouseUp);
+    Event.stopObserving(document, "mousemove", this.eventMouseMove);
+    this.handles.each( function(h) {
+      Event.stopObserving(h, "mousedown", slider.eventMouseDown);
+    });
+  },
+  setDisabled: function(){
+    this.disabled = true;
+  },
+  setEnabled: function(){
+    this.disabled = false;
+  },  
+  getNearestValue: function(value){
+    if (this.allowedValues){
+      if (value >= this.allowedValues.max()) return(this.allowedValues.max());
+      if (value <= this.allowedValues.min()) return(this.allowedValues.min());
+      
+      var offset = Math.abs(this.allowedValues[0] - value);
+      var newValue = this.allowedValues[0];
+      this.allowedValues.each( function(v) {
+        var currentOffset = Math.abs(v - value);
+        if (currentOffset <= offset){
+          newValue = v;
+          offset = currentOffset;
+        } 
+      });
+      return newValue;
+    }
+    if (value > this.range.end) return this.range.end;
+    if (value < this.range.start) return this.range.start;
+    return value;
+  },
+  setValue: function(sliderValue, handleIdx){
+    if (!this.active) {
+      this.activeHandleIdx = handleIdx || 0;
+      this.activeHandle    = this.handles[this.activeHandleIdx];
+      this.updateStyles();
+    }
+    handleIdx = handleIdx || this.activeHandleIdx || 0;
+    if (this.initialized && this.restricted) {
+      if ((handleIdx>0) && (sliderValue<this.values[handleIdx-1]))
+        sliderValue = this.values[handleIdx-1];
+      if ((handleIdx < (this.handles.length-1)) && (sliderValue>this.values[handleIdx+1]))
+        sliderValue = this.values[handleIdx+1];
+    }
+    sliderValue = this.getNearestValue(sliderValue);
+    this.values[handleIdx] = sliderValue;
+    this.value = this.values[0]; // assure backwards compat
+    
+    this.handles[handleIdx].style[this.isVertical() ? 'top' : 'left'] = 
+      this.translateToPx(sliderValue);
+    
+    this.drawSpans();
+    if (!this.dragging || !this.event) this.updateFinished();
+  },
+  setValueBy: function(delta, handleIdx) {
+    this.setValue(this.values[handleIdx || this.activeHandleIdx || 0] + delta, 
+      handleIdx || this.activeHandleIdx || 0);
+  },
+  translateToPx: function(value) {
+    return Math.round(
+      ((this.trackLength-this.handleLength)/(this.range.end-this.range.start)) * 
+      (value - this.range.start)) + "px";
+  },
+  translateToValue: function(offset) {
+    return ((offset/(this.trackLength-this.handleLength) * 
+      (this.range.end-this.range.start)) + this.range.start);
+  },
+  getRange: function(range) {
+    var v = this.values.sortBy(Prototype.K); 
+    range = range || 0;
+    return $R(v[range],v[range+1]);
+  },
+  minimumOffset: function(){
+    return(this.isVertical() ? this.alignY : this.alignX);
+  },
+  maximumOffset: function(){
+    return(this.isVertical() ? 
+      (this.track.offsetHeight != 0 ? this.track.offsetHeight :
+        this.track.style.height.replace(/px$/,"")) - this.alignY : 
+      (this.track.offsetWidth != 0 ? this.track.offsetWidth : 
+        this.track.style.width.replace(/px$/,"")) - this.alignX);
+  },  
+  isVertical:  function(){
+    return (this.axis == 'vertical');
+  },
+  drawSpans: function() {
+    var slider = this;
+    if (this.spans)
+      $R(0, this.spans.length-1).each(function(r) { slider.setSpan(slider.spans[r], slider.getRange(r)) });
+    if (this.options.startSpan)
+      this.setSpan(this.options.startSpan,
+        $R(0, this.values.length>1 ? this.getRange(0).min() : this.value ));
+    if (this.options.endSpan)
+      this.setSpan(this.options.endSpan, 
+        $R(this.values.length>1 ? this.getRange(this.spans.length-1).max() : this.value, this.maximum));
+  },
+  setSpan: function(span, range) {
+    if (this.isVertical()) {
+      span.style.top = this.translateToPx(range.start);
+      span.style.height = this.translateToPx(range.end - range.start + this.range.start);
+    } else {
+      span.style.left = this.translateToPx(range.start);
+      span.style.width = this.translateToPx(range.end - range.start + this.range.start);
+    }
+  },
+  updateStyles: function() {
+    this.handles.each( function(h){ Element.removeClassName(h, 'selected') });
+    Element.addClassName(this.activeHandle, 'selected');
+  },
+  startDrag: function(event) {
+    if (Event.isLeftClick(event)) {
+      if (!this.disabled){
+        this.active = true;
+        
+        var handle = Event.element(event);
+        var pointer  = [Event.pointerX(event), Event.pointerY(event)];
+        var track = handle;
+        if (track==this.track) {
+          var offsets  = Position.cumulativeOffset(this.track); 
+          this.event = event;
+          this.setValue(this.translateToValue( 
+           (this.isVertical() ? pointer[1]-offsets[1] : pointer[0]-offsets[0])-(this.handleLength/2)
+          ));
+          var offsets  = Position.cumulativeOffset(this.activeHandle);
+          this.offsetX = (pointer[0] - offsets[0]);
+          this.offsetY = (pointer[1] - offsets[1]);
+        } else {
+          // find the handle (prevents issues with Safari)
+          while((this.handles.indexOf(handle) == -1) && handle.parentNode) 
+            handle = handle.parentNode;
+            
+          if (this.handles.indexOf(handle)!=-1) {
+            this.activeHandle    = handle;
+            this.activeHandleIdx = this.handles.indexOf(this.activeHandle);
+            this.updateStyles();
+            
+            var offsets  = Position.cumulativeOffset(this.activeHandle);
+            this.offsetX = (pointer[0] - offsets[0]);
+            this.offsetY = (pointer[1] - offsets[1]);
+          }
+        }
+      }
+      Event.stop(event);
+    }
+  },
+  update: function(event) {
+   if (this.active) {
+      if (!this.dragging) this.dragging = true;
+      this.draw(event);
+      if (Prototype.Browser.WebKit) window.scrollBy(0,0);
+      Event.stop(event);
+   }
+  },
+  draw: function(event) {
+    var pointer = [Event.pointerX(event), Event.pointerY(event)];
+    var offsets = Position.cumulativeOffset(this.track);
+    pointer[0] -= this.offsetX + offsets[0];
+    pointer[1] -= this.offsetY + offsets[1];
+    this.event = event;
+    this.setValue(this.translateToValue( this.isVertical() ? pointer[1] : pointer[0] ));
+    if (this.initialized && this.options.onSlide)
+      this.options.onSlide(this.values.length>1 ? this.values : this.value, this);
+  },
+  endDrag: function(event) {
+    if (this.active && this.dragging) {
+      this.finishDrag(event, true);
+      Event.stop(event);
+    }
+    this.active = false;
+    this.dragging = false;
+  },  
+  finishDrag: function(event, success) {
+    this.active = false;
+    this.dragging = false;
+    this.updateFinished();
+  },
+  updateFinished: function() {
+    if (this.initialized && this.options.onChange) 
+      this.options.onChange(this.values.length>1 ? this.values : this.value, this);
+    this.event = null;
+  }
+});
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/sound.js b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/sound.js
new file mode 100644
index 0000000..eba3843
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/sound.js
@@ -0,0 +1,55 @@
+// script.aculo.us sound.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//
+// Based on code created by Jules Gravinese (http://www.webveteran.com/)
+//
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
+
+Sound = {
+  tracks: {},
+  _enabled: true,
+  template:
+    new Template('<embed style="height:0" id="sound_#{track}_#{id}" src="#{url}" loop="false" autostart="true" hidden="true"/>'),
+  enable: function(){
+    Sound._enabled = true;
+  },
+  disable: function(){
+    Sound._enabled = false;
+  },
+  play: function(url){
+    if(!Sound._enabled) return;
+    var options = Object.extend({
+      track: 'global', url: url, replace: false
+    }, arguments[1] || {});
+    
+    if(options.replace && this.tracks[options.track]) {
+      $R(0, this.tracks[options.track].id).each(function(id){
+        var sound = $('sound_'+options.track+'_'+id);
+        sound.Stop && sound.Stop();
+        sound.remove();
+      })
+      this.tracks[options.track] = null;
+    }
+      
+    if(!this.tracks[options.track])
+      this.tracks[options.track] = { id: 0 }
+    else
+      this.tracks[options.track].id++;
+      
+    options.id = this.tracks[options.track].id;
+    $$('body')[0].insert( 
+      Prototype.Browser.IE ? new Element('bgsound',{
+        id: 'sound_'+options.track+'_'+options.id,
+        src: options.url, loop: 1, autostart: true
+      }) : Sound.template.evaluate(options));
+  }
+};
+
+if(Prototype.Browser.Gecko && navigator.userAgent.indexOf("Win") > 0){
+  if(navigator.plugins && $A(navigator.plugins).detect(function(p){ return p.name.indexOf('QuickTime') != -1 }))
+    Sound.template = new Template('<object id="sound_#{track}_#{id}" width="0" height="0" type="audio/mpeg" data="#{url}"/>')
+  else
+    Sound.play = function(){}
+}
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/swfobject.js b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/swfobject.js
new file mode 100644
index 0000000..9c6b79f
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/swfobject.js
@@ -0,0 +1,178 @@
+/**
+ * SWFObject v1.4: Flash Player detection and embed - http://blog.deconcept.com/swfobject/
+ *
+ * SWFObject is (c) 2006 Geoff Stearns and is released under the MIT License:
+ * http://www.opensource.org/licenses/mit-license.php
+ *
+ * **SWFObject is the SWF embed script formarly known as FlashObject. The name was changed for
+ *   legal reasons.
+ */
+if(typeof deconcept == "undefined") var deconcept = new Object();
+if(typeof deconcept.util == "undefined") deconcept.util = new Object();
+if(typeof deconcept.SWFObjectUtil == "undefined") deconcept.SWFObjectUtil = new Object();
+deconcept.SWFObject = function(swf, id, w, h, ver, c, useExpressInstall, quality, xiRedirectUrl, redirectUrl, detectKey){
+	if (!document.createElement || !document.getElementById) { return; }
+	this.DETECT_KEY = detectKey ? detectKey : 'detectflash';
+	this.skipDetect = deconcept.util.getRequestParameter(this.DETECT_KEY);
+	this.params = new Object();
+	this.variables = new Object();
+	this.attributes = new Array();
+	if(swf) { this.setAttribute('swf', swf); }
+	if(id) { this.setAttribute('id', id); }
+	if(w) { this.setAttribute('width', w); }
+	if(h) { this.setAttribute('height', h); }
+	if(ver) { this.setAttribute('version', new deconcept.PlayerVersion(ver.toString().split("."))); }
+	this.installedVer = deconcept.SWFObjectUtil.getPlayerVersion(this.getAttribute('version'), useExpressInstall);
+	if(c) { this.addParam('bgcolor', c); }
+	var q = quality ? quality : 'high';
+	this.addParam('quality', q);
+	this.setAttribute('useExpressInstall', useExpressInstall);
+	this.setAttribute('doExpressInstall', false);
+	var xir = (xiRedirectUrl) ? xiRedirectUrl : window.location;
+	this.setAttribute('xiRedirectUrl', xir);
+	this.setAttribute('redirectUrl', '');
+	if(redirectUrl) { this.setAttribute('redirectUrl', redirectUrl); }
+}
+deconcept.SWFObject.prototype = {
+	setAttribute: function(name, value){
+		this.attributes[name] = value;
+	},
+	getAttribute: function(name){
+		return this.attributes[name];
+	},
+	addParam: function(name, value){
+		this.params[name] = value;
+	},
+	getParams: function(){
+		return this.params;
+	},
+	addVariable: function(name, value){
+		this.variables[name] = value;
+	},
+	getVariable: function(name){
+		return this.variables[name];
+	},
+	getVariables: function(){
+		return this.variables;
+	},
+	getVariablePairs: function(){
+		var variablePairs = new Array();
+		var key;
+		var variables = this.getVariables();
+		for(key in variables){
+			variablePairs.push(key +"="+ variables[key]);
+		}
+		return variablePairs;
+	},
+	getSWFHTML: function() {
+		var swfNode = "";
+		if (navigator.plugins && navigator.mimeTypes && navigator.mimeTypes.length) { // netscape plugin architecture
+			if (this.getAttribute("doExpressInstall")) this.addVariable("MMplayerType", "PlugIn");
+			swfNode = '<embed type="application/x-shockwave-flash" src="'+ this.getAttribute('swf') +'" width="'+ this.getAttribute('width') +'" height="'+ this.getAttribute('height') +'"';
+			swfNode += ' id="'+ this.getAttribute('id') +'" name="'+ this.getAttribute('id') +'" ';
+			var params = this.getParams();
+			 for(var key in params){ swfNode += [key] +'="'+ params[key] +'" '; }
+			var pairs = this.getVariablePairs().join("&");
+			 if (pairs.length > 0){ swfNode += 'flashvars="'+ pairs +'"'; }
+			swfNode += '/>';
+		} else { // PC IE
+			if (this.getAttribute("doExpressInstall")) this.addVariable("MMplayerType", "ActiveX");
+			swfNode = '<object id="'+ this.getAttribute('id') +'" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="'+ this.getAttribute('width') +'" height="'+ this.getAttribute('height') +'">';
+			swfNode += '<param name="movie" value="'+ this.getAttribute('swf') +'" />';
+			var params = this.getParams();
+			for(var key in params) {
+			 swfNode += '<param name="'+ key +'" value="'+ params[key] +'" />';
+			}
+			var pairs = this.getVariablePairs().join("&");
+			if(pairs.length > 0) {swfNode += '<param name="flashvars" value="'+ pairs +'" />';}
+			swfNode += "</object>";
+		}
+		return swfNode;
+	},
+	write: function(elementId){
+		if(this.getAttribute('useExpressInstall')) {
+			// check to see if we need to do an express install
+			var expressInstallReqVer = new deconcept.PlayerVersion([6,0,65]);
+			if (this.installedVer.versionIsValid(expressInstallReqVer) && !this.installedVer.versionIsValid(this.getAttribute('version'))) {
+				this.setAttribute('doExpressInstall', true);
+				this.addVariable("MMredirectURL", escape(this.getAttribute('xiRedirectUrl')));
+				document.title = document.title.slice(0, 47) + " - Flash Player Installation";
+				this.addVariable("MMdoctitle", document.title);
+			}
+		}
+		if(this.skipDetect || this.getAttribute('doExpressInstall') || this.installedVer.versionIsValid(this.getAttribute('version'))){
+			var n = (typeof elementId == 'string') ? document.getElementById(elementId) : elementId;
+			n.innerHTML = this.getSWFHTML();
+			return true;
+		}else{
+			if(this.getAttribute('redirectUrl') != "") {
+				document.location.replace(this.getAttribute('redirectUrl'));
+			}
+		}
+		return false;
+	}
+}
+
+/* ---- detection functions ---- */
+deconcept.SWFObjectUtil.getPlayerVersion = function(reqVer, xiInstall){
+	var PlayerVersion = new deconcept.PlayerVersion([0,0,0]);
+	if(navigator.plugins && navigator.mimeTypes.length){
+		var x = navigator.plugins["Shockwave Flash"];
+		if(x && x.description) {
+			PlayerVersion = new deconcept.PlayerVersion(x.description.replace(/([a-z]|[A-Z]|\s)+/, "").replace(/(\s+r|\s+b[0-9]+)/, ".").split("."));
+		}
+	}else{
+		try{
+			var axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
+			for (var i=3; axo!=null; i++) {
+				axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash."+i);
+				PlayerVersion = new deconcept.PlayerVersion([i,0,0]);
+			}
+		}catch(e){}
+		if (reqVer && PlayerVersion.major > reqVer.major) return PlayerVersion; // version is ok, skip minor detection
+		// this only does the minor rev lookup if the user's major version 
+		// is not 6 or we are checking for a specific minor or revision number
+		// see http://blog.deconcept.com/2006/01/11/getvariable-setvariable-crash-internet-explorer-flash-6/
+		if (!reqVer || ((reqVer.minor != 0 || reqVer.rev != 0) && PlayerVersion.major == reqVer.major) || PlayerVersion.major != 6 || xiInstall) {
+			try{
+				PlayerVersion = new deconcept.PlayerVersion(axo.GetVariable("$version").split(" ")[1].split(","));
+			}catch(e){}
+		}
+	}
+	return PlayerVersion;
+}
+deconcept.PlayerVersion = function(arrVersion){
+	this.major = parseInt(arrVersion[0]) != null ? parseInt(arrVersion[0]) : 0;
+	this.minor = parseInt(arrVersion[1]) || 0;
+	this.rev = parseInt(arrVersion[2]) || 0;
+}
+deconcept.PlayerVersion.prototype.versionIsValid = function(fv){
+	if(this.major < fv.major) return false;
+	if(this.major > fv.major) return true;
+	if(this.minor < fv.minor) return false;
+	if(this.minor > fv.minor) return true;
+	if(this.rev < fv.rev) return false;
+	return true;
+}
+/* ---- get value of query string param ---- */
+deconcept.util = {
+	getRequestParameter: function(param){
+		var q = document.location.search || document.location.hash;
+		if(q){
+			var startIndex = q.indexOf(param +"=");
+			var endIndex = (q.indexOf("&", startIndex) > -1) ? q.indexOf("&", startIndex) : q.length;
+			if (q.length > 1 && startIndex > -1) {
+				return q.substring(q.indexOf("=", startIndex)+1, endIndex);
+			}
+		}
+		return "";
+	}
+}
+
+/* add Array.push if needed (ie5) */
+if (Array.prototype.push == null) { Array.prototype.push = function(item) { this[this.length] = item; return this.length; }}
+
+/* add some aliases for ease of use/backwards compatibility */
+var getQueryParamValue = deconcept.util.getRequestParameter;
+var FlashObject = deconcept.SWFObject; // for legacy support
+var SWFObject = deconcept.SWFObject;
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/unu.js b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/unu.js
new file mode 100644
index 0000000..5e70cf1
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/unu.js
@@ -0,0 +1,64 @@
+/*

+  UNU-specific JavaScript

+*/

+

+var UNU = {

+

+prepareNavigation:function()

+{

+  var lis = $('navul').childNodes;

+  for(var i=0;i<lis.length;i++)

+  {

+    // grab just the list items

+    if(lis[i].nodeType == 1 && lis[i].tagName.toLowerCase() == 'li')

+    {

+   

+   

+     current	= lis[i].childNodes;

+	 current[0].className = 'h';

+	 el = current[0];

+	 var wrapper = document.createElement('span');

+	 el.parentNode.replaceChild(wrapper, el);

+	 wrapper.appendChild(el);

+   

+      var sub = lis[i].getElementsByTagName("ul");

+      if(sub.length > 0)

+      {

+        // attach a rollup effect and onclick event to the span inside the list item

+        // this element must be the first element (ie: no space between the open

+        // li and the <span> or <a>

+        lis[i].childNodes[0].fx = new fx.Height(sub[0], {duration:300});

+        lis[i].childNodes[0].fx.hide();

+        lis[i].childNodes[0].onclick = this.fxonclick;

+      }

+    }

+  }

+

+ var lis = $('navul').getElementsByTagName('li');

+  for(var i=0;i<lis.length;i++)

+  {

+      if(lis[i].className && lis[i].className.match(/current_page_item/))

+      {

+		  

+        if(lis[i].childNodes[0].fx)

+        {

+			

+		  

+          lis[i].childNodes[0].fx.toggle();

+        }else if(lis[i].parentNode.parentNode.parentNode.parentNode.childNodes[0].fx){

+				lis[i].parentNode.parentNode.parentNode.parentNode.childNodes[0].fx.toggle();

+		} else if(lis[i].parentNode.parentNode.childNodes[0].fx){

+           

+	

+				lis[i].parentNode.parentNode.childNodes[0].fx.toggle();

+        } 

+      }

+  }

+},

+

+fxonclick:function(){

+  this.fx.toggle();

+  return false;

+}

+

+};

diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/unu_logo_white.gif b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/unu_logo_white.gif
new file mode 100644
index 0000000..14f1c4e
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/unu_logo_white.gif
diff --git a/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/urchin.js b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/urchin.js
new file mode 100644
index 0000000..3913c02
--- /dev/null
+++ b/assignment1/materials/Environmental Impact Assessment Course Module » 2-1 Introduction_files/urchin.js
@@ -0,0 +1,695 @@
+//-- Google Analytics Urchin Module
+//-- Copyright 2007 Google, All Rights Reserved.
+
+//-- Urchin On Demand Settings ONLY
+var _uacct="";			// set up the Urchin Account
+var _userv=1;			// service mode (0=local,1=remote,2=both)
+
+//-- UTM User Settings
+var _ufsc=1;			// set client info flag (1=on|0=off)
+var _udn="auto";		// (auto|none|domain) set the domain name for cookies
+var _uhash="on";		// (on|off) unique domain hash for cookies
+var _utimeout="1800";   	// set the inactive session timeout in seconds
+var _ugifpath="/__utm.gif";	// set the web path to the __utm.gif file
+var _utsp="|";			// transaction field separator
+var _uflash=1;			// set flash version detect option (1=on|0=off)
+var _utitle=1;			// set the document title detect option (1=on|0=off)
+var _ulink=0;			// enable linker functionality (1=on|0=off)
+var _uanchor=0;			// enable use of anchors for campaign (1=on|0=off)
+var _utcp="/";			// the cookie path for tracking
+var _usample=100;		// The sampling % of visitors to track (1-100).
+
+//-- UTM Campaign Tracking Settings
+var _uctm=1;			// set campaign tracking module (1=on|0=off)
+var _ucto="15768000";		// set timeout in seconds (6 month default)
+var _uccn="utm_campaign";	// name
+var _ucmd="utm_medium";		// medium (cpc|cpm|link|email|organic)
+var _ucsr="utm_source";		// source
+var _uctr="utm_term";		// term/keyword
+var _ucct="utm_content";	// content
+var _ucid="utm_id";		// id number
+var _ucno="utm_nooverride";	// don't override
+
+//-- Auto/Organic Sources and Keywords
+var _uOsr=new Array();
+var _uOkw=new Array();
+_uOsr[0]="google";	_uOkw[0]="q";
+_uOsr[1]="yahoo";	_uOkw[1]="p";
+_uOsr[2]="msn";		_uOkw[2]="q";
+_uOsr[3]="aol";		_uOkw[3]="query";
+_uOsr[4]="aol";		_uOkw[4]="encquery";
+_uOsr[5]="lycos";	_uOkw[5]="query";
+_uOsr[6]="ask";		_uOkw[6]="q";
+_uOsr[7]="altavista";	_uOkw[7]="q";
+_uOsr[8]="netscape";	_uOkw[8]="query";
+_uOsr[9]="cnn";	_uOkw[9]="query";
+_uOsr[10]="looksmart";	_uOkw[10]="qt";
+_uOsr[11]="about";	_uOkw[11]="terms";
+_uOsr[12]="mamma";	_uOkw[12]="query";
+_uOsr[13]="alltheweb";	_uOkw[13]="q";
+_uOsr[14]="gigablast";	_uOkw[14]="q";
+_uOsr[15]="voila";	_uOkw[15]="rdata";
+_uOsr[16]="virgilio";	_uOkw[16]="qs";
+_uOsr[17]="live";	_uOkw[17]="q";
+_uOsr[18]="baidu";	_uOkw[18]="wd";
+_uOsr[19]="alice";	_uOkw[19]="qs";
+_uOsr[20]="yandex";	_uOkw[20]="text";
+_uOsr[21]="najdi";	_uOkw[21]="q";
+_uOsr[22]="aol";	_uOkw[22]="q";
+_uOsr[23]="club-internet"; _uOkw[23]="query";
+_uOsr[24]="mama";	_uOkw[24]="query";
+_uOsr[25]="seznam";	_uOkw[25]="q";
+_uOsr[26]="search";	_uOkw[26]="q";
+_uOsr[27]="wp";	_uOkw[27]="szukaj";
+_uOsr[28]="onet";	_uOkw[28]="qt";
+_uOsr[29]="netsprint";	_uOkw[29]="q";
+_uOsr[30]="google.interia";	_uOkw[30]="q";
+_uOsr[31]="szukacz";	_uOkw[31]="q";
+_uOsr[32]="yam";	_uOkw[32]="k";
+_uOsr[33]="pchome";	_uOkw[33]="q";
+_uOsr[34]="kvasir";	_uOkw[34]="searchExpr";
+_uOsr[35]="sesam";	_uOkw[35]="q";
+_uOsr[36]="ozu"; _uOkw[36]="q";
+_uOsr[37]="terra"; _uOkw[37]="query";
+_uOsr[38]="nostrum"; _uOkw[38]="query";
+_uOsr[39]="mynet"; _uOkw[39]="q";
+_uOsr[40]="ekolay"; _uOkw[40]="q";
+_uOsr[41]="search.ilse"; _uOkw[41]="search_for";
+_uOsr[42]="bing"; _uOkw[42]="q";
+
+//-- Auto/Organic Keywords to Ignore
+var _uOno=new Array();
+//_uOno[0]="urchin";
+//_uOno[1]="urchin.com";
+//_uOno[2]="www.urchin.com";
+
+//-- Referral domains to Ignore
+var _uRno=new Array();
+//_uRno[0]=".urchin.com";
+
+//-- **** Don't modify below this point ***
+var _uff,_udh,_udt,_ubl=0,_udo="",_uu,_ufns=0,_uns=0,_ur="-",_ufno=0,_ust=0,_ubd=document,_udl=_ubd.location,_udlh="",_uwv="1.4";
+var _ugifpath2="http://www.google-analytics.com/__utm.gif";
+if (_udl.hash) _udlh=_udl.href.substring(_udl.href.indexOf('#'));
+if (_udl.protocol=="https:") _ugifpath2="https://ssl.google-analytics.com/__utm.gif";
+if (!_utcp || _utcp=="") _utcp="/";
+function urchinTracker(page) {
+ if (_udl.protocol=="file:") return;
+ if (_uff && (!page || page=="")) return;
+ var a,b,c,xx,v,z,k,x="",s="",f=0,nv=0;
+ var nx=" expires="+_uNx()+";";
+ var dc=_ubd.cookie;
+ _udh=_uDomain();
+ if (!_uVG()) return;
+ _uu=Math.round(Math.random()*2147483647);
+ _udt=new Date();
+ _ust=Math.round(_udt.getTime()/1000);
+ a=dc.indexOf("__utma="+_udh+".");
+ b=dc.indexOf("__utmb="+_udh);
+ c=dc.indexOf("__utmc="+_udh);
+ if (_udn && _udn!="") { _udo=" domain="+_udn+";"; }
+ if (_utimeout && _utimeout!="") {
+  x=new Date(_udt.getTime()+(_utimeout*1000));
+  x=" expires="+x.toGMTString()+";";
+ }
+ if (_ulink) {
+  if (_uanchor && _udlh && _udlh!="") s=_udlh+"&";
+  s+=_udl.search;
+  if(s && s!="" && s.indexOf("__utma=")>=0) {
+   if (!(_uIN(a=_uGC(s,"__utma=","&")))) a="-";
+   if (!(_uIN(b=_uGC(s,"__utmb=","&")))) b="-";
+   if (!(_uIN(c=_uGC(s,"__utmc=","&")))) c="-";
+   v=_uGC(s,"__utmv=","&");
+   z=_uGC(s,"__utmz=","&");
+   k=_uGC(s,"__utmk=","&");
+   xx=_uGC(s,"__utmx=","&");
+   if ((k*1) != ((_uHash(a+b+c+xx+z+v)*1)+(_udh*1))) {_ubl=1;a="-";b="-";c="-";xx="-";z="-";v="-";}
+   if (a!="-" && b!="-" && c!="-") f=1;
+   else if(a!="-") f=2;
+  }
+ }
+ if(f==1) {
+  _ubd.cookie="__utma="+a+"; path="+_utcp+";"+nx+_udo;
+  _ubd.cookie="__utmb="+b+"; path="+_utcp+";"+x+_udo;
+  _ubd.cookie="__utmc="+c+"; path="+_utcp+";"+_udo;
+ } else if (f==2) {
+  a=_uFixA(s,"&",_ust);
+  _ubd.cookie="__utma="+a+"; path="+_utcp+";"+nx+_udo;
+  _ubd.cookie="__utmb="+_udh+"; path="+_utcp+";"+x+_udo;
+  _ubd.cookie="__utmc="+_udh+"; path="+_utcp+";"+_udo;
+  _ufns=1;
+ } else if (a>=0 && b>=0 && c>=0) {
+   b = _uGC(dc,"__utmb="+_udh,";");
+   b = ("-" == b) ? _udh : b;  
+  _ubd.cookie="__utmb="+b+"; path="+_utcp+";"+x+_udo;
+ } else {
+  if (a>=0) a=_uFixA(_ubd.cookie,";",_ust);
+  else {
+   a=_udh+"."+_uu+"."+_ust+"."+_ust+"."+_ust+".1";
+   nv=1;
+  }
+  _ubd.cookie="__utma="+a+"; path="+_utcp+";"+nx+_udo;
+  _ubd.cookie="__utmb="+_udh+"; path="+_utcp+";"+x+_udo;
+  _ubd.cookie="__utmc="+_udh+"; path="+_utcp+";"+_udo;
+  _ufns=1;
+ }
+ if (_ulink && xx && xx!="" && xx!="-") {
+   xx=_uUES(xx);
+   if (xx.indexOf(";")==-1) _ubd.cookie="__utmx="+xx+"; path="+_utcp+";"+nx+_udo;
+ }
+ if (_ulink && v && v!="" && v!="-") {
+  v=_uUES(v);
+  if (v.indexOf(";")==-1) _ubd.cookie="__utmv="+v+"; path="+_utcp+";"+nx+_udo;
+ }
+ var wc=window;
+ var c=_ubd.cookie;
+ if(wc && wc.gaGlobal && wc.gaGlobal.dh==_udh){
+  var g=wc.gaGlobal;
+  var ua=c.split("__utma="+_udh+".")[1].split(";")[0].split(".");
+  if(g.sid)ua[3]=g.sid;
+  if(nv>0){
+   ua[2]=ua[3];
+   if(g.vid){
+    var v=g.vid.split(".");
+    ua[0]=v[0];
+    ua[1]=v[1];
+   }
+  }
+  _ubd.cookie="__utma="+_udh+"."+ua.join(".")+"; path="+_utcp+";"+nx+_udo;
+ }
+ _uInfo(page);
+ _ufns=0;
+ _ufno=0;
+ if (!page || page=="") _uff=1;
+}
+function _uGH() {
+ var hid;
+ var wc=window;
+ if (wc && wc.gaGlobal && wc.gaGlobal.hid) {
+  hid=wc.gaGlobal.hid;
+ } else {
+  hid=Math.round(Math.random()*0x7fffffff);
+  if (!wc.gaGlobal) wc.gaGlobal={};
+  wc.gaGlobal.hid=hid;
+ }
+ return hid;
+}
+function _uInfo(page) {
+ var p,s="",dm="",pg=_udl.pathname+_udl.search;
+ if (page && page!="") pg=_uES(page,1);
+ _ur=_ubd.referrer;
+ if (!_ur || _ur=="") { _ur="-"; }
+ else {
+  dm=_ubd.domain;
+  if(_utcp && _utcp!="/") dm+=_utcp;
+  p=_ur.indexOf(dm);
+  if ((p>=0) && (p<=8)) { _ur="0"; }
+  if (_ur.indexOf("[")==0 && _ur.lastIndexOf("]")==(_ur.length-1)) { _ur="-"; }
+ }
+ s+="&utmn="+_uu;
+ if (_ufsc) s+=_uBInfo();
+ if (_uctm) s+=_uCInfo();
+ if (_utitle && _ubd.title && _ubd.title!="") s+="&utmdt="+_uES(_ubd.title);
+ if (_udl.hostname && _udl.hostname!="") s+="&utmhn="+_uES(_udl.hostname);
+ if (_usample && _usample != 100) s+="&utmsp="+_uES(_usample);
+ s+="&utmhid="+_uGH();
+ s+="&utmr="+_ur;
+ s+="&utmp="+pg;
+ if ((_userv==0 || _userv==2) && _uSP()) {
+  var i=new Image(1,1);
+  i.src=_ugifpath+"?"+"utmwv="+_uwv+s;
+  i.onload=function() { _uVoid(); }
+ }
+ if ((_userv==1 || _userv==2) && _uSP()) {
+  var i2=new Image(1,1);
+  i2.src=_ugifpath2+"?"+"utmwv="+_uwv+s+"&utmac="+_uacct+"&utmcc="+_uGCS();
+  i2.onload=function() { _uVoid(); }
+ }
+ return;
+}
+function _uVoid() { return; }
+function _uCInfo() {
+ if (!_ucto || _ucto=="") { _ucto="15768000"; }
+ if (!_uVG()) return;
+ var c="",t="-",t2="-",t3="-",o=0,cs=0,cn=0,i=0,z="-",s="";
+ if (_uanchor && _udlh && _udlh!="") s=_udlh+"&";
+ s+=_udl.search;
+ var x=new Date(_udt.getTime()+(_ucto*1000));
+ var dc=_ubd.cookie;
+ x=" expires="+x.toGMTString()+";";
+ if (_ulink && !_ubl) {
+  z=_uUES(_uGC(s,"__utmz=","&"));
+  if (z!="-" && z.indexOf(";")==-1) { _ubd.cookie="__utmz="+z+"; path="+_utcp+";"+x+_udo; return ""; }
+ }
+ z=dc.indexOf("__utmz="+_udh+".");
+ if (z>-1) { z=_uGC(dc,"__utmz="+_udh+".",";"); }
+ else { z="-"; }
+ t=_uGC(s,_ucid+"=","&");
+ t2=_uGC(s,_ucsr+"=","&");
+ t3=_uGC(s,"gclid=","&");
+ if ((t!="-" && t!="") || (t2!="-" && t2!="") || (t3!="-" && t3!="")) {
+  if (t!="-" && t!="") c+="utmcid="+_uEC(t);
+  if (t2!="-" && t2!="") { if (c != "") c+="|"; c+="utmcsr="+_uEC(t2); }
+  if (t3!="-" && t3!="") { if (c != "") c+="|"; c+="utmgclid="+_uEC(t3); }
+  t=_uGC(s,_uccn+"=","&");
+  if (t!="-" && t!="") c+="|utmccn="+_uEC(t);
+  else c+="|utmccn=(not+set)";
+  t=_uGC(s,_ucmd+"=","&");
+  if (t!="-" && t!="") c+="|utmcmd="+_uEC(t);
+  else  c+="|utmcmd=(not+set)";
+  t=_uGC(s,_uctr+"=","&");
+  if (t!="-" && t!="") c+="|utmctr="+_uEC(t);
+  else { t=_uOrg(1); if (t!="-" && t!="") c+="|utmctr="+_uEC(t); }
+  t=_uGC(s,_ucct+"=","&");
+  if (t!="-" && t!="") c+="|utmcct="+_uEC(t);
+  t=_uGC(s,_ucno+"=","&");
+  if (t=="1") o=1;
+  if (z!="-" && o==1) return "";
+ }
+ if (c=="-" || c=="") { c=_uOrg(); if (z!="-" && _ufno==1)  return ""; }
+ if (c=="-" || c=="") { if (_ufns==1)  c=_uRef(); if (z!="-" && _ufno==1)  return ""; }
+ if (c=="-" || c=="") {
+  if (z=="-" && _ufns==1) { c="utmccn=(direct)|utmcsr=(direct)|utmcmd=(none)"; }
+  if (c=="-" || c=="") return "";
+ }
+ if (z!="-") {
+  i=z.indexOf(".");
+  if (i>-1) i=z.indexOf(".",i+1);
+  if (i>-1) i=z.indexOf(".",i+1);
+  if (i>-1) i=z.indexOf(".",i+1);
+  t=z.substring(i+1,z.length);
+  if (t.toLowerCase()==c.toLowerCase()) cs=1;
+  t=z.substring(0,i);
+  if ((i=t.lastIndexOf(".")) > -1) {
+   t=t.substring(i+1,t.length);
+   cn=(t*1);
+  }
+ }
+ if (cs==0 || _ufns==1) {
+  t=_uGC(dc,"__utma="+_udh+".",";");
+  if ((i=t.lastIndexOf(".")) > 9) {
+   _uns=t.substring(i+1,t.length);
+   _uns=(_uns*1);
+  }
+  cn++;
+  if (_uns==0) _uns=1;
+  _ubd.cookie="__utmz="+_udh+"."+_ust+"."+_uns+"."+cn+"."+c+"; path="+_utcp+"; "+x+_udo;
+ }
+ if (cs==0 || _ufns==1) return "&utmcn=1";
+ else return "&utmcr=1";
+}
+function _uRef() {
+ if (_ur=="0" || _ur=="" || _ur=="-") return "";
+ var i=0,h,k,n;
+ if ((i=_ur.indexOf("://"))<0 || _uGCse()) return "";
+ h=_ur.substring(i+3,_ur.length);
+ if (h.indexOf("/") > -1) {
+  k=h.substring(h.indexOf("/"),h.length);
+  if (k.indexOf("?") > -1) k=k.substring(0,k.indexOf("?"));
+  h=h.substring(0,h.indexOf("/"));
+ }
+ h=h.toLowerCase();
+ n=h;
+ if ((i=n.indexOf(":")) > -1) n=n.substring(0,i);
+ for (var ii=0;ii<_uRno.length;ii++) {
+  if ((i=n.indexOf(_uRno[ii].toLowerCase())) > -1 && n.length==(i+_uRno[ii].length)) { _ufno=1; break; }
+ }
+ if (h.indexOf("www.")==0) h=h.substring(4,h.length);
+ return "utmccn=(referral)|utmcsr="+_uEC(h)+"|"+"utmcct="+_uEC(k)+"|utmcmd=referral";
+}
+function _uOrg(t) {
+ if (_ur=="0" || _ur=="" || _ur=="-") return "";
+ var i=0,h,k;
+ if ((i=_ur.indexOf("://"))<0 || _uGCse()) return "";
+ h=_ur.substring(i+3,_ur.length);
+ if (h.indexOf("/") > -1) {
+  h=h.substring(0,h.indexOf("/"));
+ }
+ for (var ii=0;ii<_uOsr.length;ii++) {
+  if (h.toLowerCase().indexOf(_uOsr[ii].toLowerCase()) > -1) {
+   if ((i=_ur.indexOf("?"+_uOkw[ii]+"=")) > -1 || (i=_ur.indexOf("&"+_uOkw[ii]+"=")) > -1) {
+    k=_ur.substring(i+_uOkw[ii].length+2,_ur.length);
+    if ((i=k.indexOf("&")) > -1) k=k.substring(0,i);
+    for (var yy=0;yy<_uOno.length;yy++) {
+     if (_uOno[yy].toLowerCase()==k.toLowerCase()) { _ufno=1; break; }
+    }
+    if (t) return _uEC(k);
+    else return "utmccn=(organic)|utmcsr="+_uEC(_uOsr[ii])+"|"+"utmctr="+_uEC(k)+"|utmcmd=organic";
+   }
+  }
+ }
+ return "";
+}
+function _uGCse() {
+ var h,p;
+ h=p=_ur.split("://")[1];
+ if(h.indexOf("/")>-1) {
+  h=h.split("/")[0];
+  p=p.substring(p.indexOf("/")+1,p.length);
+ }
+ if(p.indexOf("?")>-1) {
+  p=p.split("?")[0];
+ }
+ if(h.toLowerCase().indexOf("google")>-1) {
+  if(_ur.indexOf("?q=")>-1 || _ur.indexOf("&q=")>-1) {
+   if (p.toLowerCase().indexOf("cse")>-1) {
+    return true;
+   }
+  }
+ }
+}
+function _uBInfo() {
+ var sr="-",sc="-",ul="-",fl="-",cs="-",je=1;
+ var n=navigator;
+ if (self.screen) {
+  sr=screen.width+"x"+screen.height;
+  sc=screen.colorDepth+"-bit";
+ } else if (self.java) {
+  var j=java.awt.Toolkit.getDefaultToolkit();
+  var s=j.getScreenSize();
+  sr=s.width+"x"+s.height;
+ }
+ if (n.language) { ul=n.language.toLowerCase(); }
+ else if (n.browserLanguage) { ul=n.browserLanguage.toLowerCase(); }
+ je=n.javaEnabled()?1:0;
+ if (_uflash) fl=_uFlash();
+ if (_ubd.characterSet) cs=_uES(_ubd.characterSet);
+ else if (_ubd.charset) cs=_uES(_ubd.charset);
+ return "&utmcs="+cs+"&utmsr="+sr+"&utmsc="+sc+"&utmul="+ul+"&utmje="+je+"&utmfl="+fl;
+}
+function __utmSetTrans() {
+ var e;
+ if (_ubd.getElementById) e=_ubd.getElementById("utmtrans");
+ else if (_ubd.utmform && _ubd.utmform.utmtrans) e=_ubd.utmform.utmtrans;
+ if (!e) return;
+ var l=e.value.split("UTM:");
+ var i,i2,c;
+ if (_userv==0 || _userv==2) i=new Array();
+ if (_userv==1 || _userv==2) { i2=new Array(); c=_uGCS(); }
+
+ for (var ii=0;ii<l.length;ii++) {
+  l[ii]=_uTrim(l[ii]);
+  if (l[ii].charAt(0)!='T' && l[ii].charAt(0)!='I') continue;
+  var r=Math.round(Math.random()*2147483647);
+  if (!_utsp || _utsp=="") _utsp="|";
+  var f=l[ii].split(_utsp),s="";
+  if (f[0].charAt(0)=='T') {
+   s="&utmt=tran"+"&utmn="+r;
+   f[1]=_uTrim(f[1]); if(f[1]&&f[1]!="") s+="&utmtid="+_uES(f[1]);
+   f[2]=_uTrim(f[2]); if(f[2]&&f[2]!="") s+="&utmtst="+_uES(f[2]);
+   f[3]=_uTrim(f[3]); if(f[3]&&f[3]!="") s+="&utmtto="+_uES(f[3]);
+   f[4]=_uTrim(f[4]); if(f[4]&&f[4]!="") s+="&utmttx="+_uES(f[4]);
+   f[5]=_uTrim(f[5]); if(f[5]&&f[5]!="") s+="&utmtsp="+_uES(f[5]);
+   f[6]=_uTrim(f[6]); if(f[6]&&f[6]!="") s+="&utmtci="+_uES(f[6]);
+   f[7]=_uTrim(f[7]); if(f[7]&&f[7]!="") s+="&utmtrg="+_uES(f[7]);
+   f[8]=_uTrim(f[8]); if(f[8]&&f[8]!="") s+="&utmtco="+_uES(f[8]);
+  } else {
+   s="&utmt=item"+"&utmn="+r;
+   f[1]=_uTrim(f[1]); if(f[1]&&f[1]!="") s+="&utmtid="+_uES(f[1]);
+   f[2]=_uTrim(f[2]); if(f[2]&&f[2]!="") s+="&utmipc="+_uES(f[2]);
+   f[3]=_uTrim(f[3]); if(f[3]&&f[3]!="") s+="&utmipn="+_uES(f[3]);
+   f[4]=_uTrim(f[4]); if(f[4]&&f[4]!="") s+="&utmiva="+_uES(f[4]);
+   f[5]=_uTrim(f[5]); if(f[5]&&f[5]!="") s+="&utmipr="+_uES(f[5]);
+   f[6]=_uTrim(f[6]); if(f[6]&&f[6]!="") s+="&utmiqt="+_uES(f[6]);
+  }
+  if (_udl.hostname && _udl.hostname!="") s+="&utmhn="+_uES(_udl.hostname);
+  if (_usample && _usample != 100) s+="&utmsp="+_uES(_usample);
+
+  if ((_userv==0 || _userv==2) && _uSP()) {
+   i[ii]=new Image(1,1);
+   i[ii].src=_ugifpath+"?"+"utmwv="+_uwv+s;
+   i[ii].onload=function() { _uVoid(); }
+  }
+  if ((_userv==1 || _userv==2) && _uSP()) {
+   i2[ii]=new Image(1,1);
+   i2[ii].src=_ugifpath2+"?"+"utmwv="+_uwv+s+"&utmac="+_uacct+"&utmcc="+c;
+   i2[ii].onload=function() { _uVoid(); }
+  }
+ }
+ return;
+}
+function _uFlash() {
+ var f="-",n=navigator;
+ if (n.plugins && n.plugins.length) {
+  for (var ii=0;ii<n.plugins.length;ii++) {
+   if (n.plugins[ii].name.indexOf('Shockwave Flash')!=-1) {
+    f=n.plugins[ii].description.split('Shockwave Flash ')[1];
+    break;
+   }
+  }
+ } else {
+  var fl;
+  try {
+   fl = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
+   f = fl.GetVariable("$version");
+  } catch(e) {}
+  if (f == "-") {
+   try {
+    fl = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");
+    f = "WIN 6,0,21,0";
+    fl.AllowScriptAccess = "always";
+    f = fl.GetVariable("$version");
+   } catch(e) {}
+  }
+  if (f == "-") {
+   try {
+    fl = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
+    f = fl.GetVariable("$version");
+   } catch(e) {}
+  }
+  if (f != "-") {
+   f = f.split(" ")[1].split(",");
+   f = f[0] + "." + f[1] + " r" + f[2];
+  }
+ }
+ return f;
+}
+function __utmLinkerUrl(l,h) {
+ var p,k,a="-",b="-",c="-",x="-",z="-",v="-";
+ var dc=_ubd.cookie;
+ var iq = l.indexOf("?");
+ var ih = l.indexOf("#");
+ var url=l;
+ if (dc) {
+  a=_uES(_uGC(dc,"__utma="+_udh+".",";"));
+  b=_uES(_uGC(dc,"__utmb="+_udh,";"));
+  c=_uES(_uGC(dc,"__utmc="+_udh,";"));
+  x=_uES(_uGC(dc,"__utmx="+_udh,";"));
+  z=_uES(_uGC(dc,"__utmz="+_udh+".",";"));
+  v=_uES(_uGC(dc,"__utmv="+_udh+".",";"));
+  k=(_uHash(a+b+c+x+z+v)*1)+(_udh*1);
+  p="__utma="+a+"&__utmb="+b+"&__utmc="+c+"&__utmx="+x+"&__utmz="+z+"&__utmv="+v+"&__utmk="+k;
+ }
+ if (p) {
+  if (h && ih>-1) return;
+  if (h) { url=l+"#"+p; }
+  else {
+   if (iq==-1 && ih==-1) url=l+"?"+p;
+   else if (ih==-1) url=l+"&"+p;
+   else if (iq==-1) url=l.substring(0,ih-1)+"?"+p+l.substring(ih);
+   else url=l.substring(0,ih-1)+"&"+p+l.substring(ih);
+  }
+ }
+ return url;
+}
+function __utmLinker(l,h) {
+ if (!_ulink || !l || l=="") return;
+ _udl.href=__utmLinkerUrl(l,h);
+}
+function __utmLinkPost(f,h) {
+ if (!_ulink || !f || !f.action) return;
+ f.action=__utmLinkerUrl(f.action, h);
+ return;
+}
+function __utmSetVar(v) {
+ if (!v || v=="") return;
+ if (!_udo || _udo == "") {
+  _udh=_uDomain();
+  if (_udn && _udn!="") { _udo=" domain="+_udn+";"; }
+ }
+ if (!_uVG()) return;
+ var r=Math.round(Math.random() * 2147483647);
+ _ubd.cookie="__utmv="+_udh+"."+_uES(v)+"; path="+_utcp+"; expires="+_uNx()+";"+_udo;
+ var s="&utmt=var&utmn="+r;
+ if (_usample && _usample != 100) s+="&utmsp="+_uES(_usample);
+ if ((_userv==0 || _userv==2) && _uSP()) {
+  var i=new Image(1,1);
+  i.src=_ugifpath+"?"+"utmwv="+_uwv+s;
+  i.onload=function() { _uVoid(); }
+ }
+ if ((_userv==1 || _userv==2) && _uSP()) {
+  var i2=new Image(1,1);
+  i2.src=_ugifpath2+"?"+"utmwv="+_uwv+s+"&utmac="+_uacct+"&utmcc="+_uGCS();
+  i2.onload=function() { _uVoid(); }
+ }
+}
+function _uGCS() {
+ var t,c="",dc=_ubd.cookie;
+ if ((t=_uGC(dc,"__utma="+_udh+".",";"))!="-") c+=_uES("__utma="+t+";+");
+ if ((t=_uGC(dc,"__utmx="+_udh,";"))!="-") c+=_uES("__utmx="+t+";+");
+ if ((t=_uGC(dc,"__utmz="+_udh+".",";"))!="-") c+=_uES("__utmz="+t+";+");
+ if ((t=_uGC(dc,"__utmv="+_udh+".",";"))!="-") c+=_uES("__utmv="+t+";");
+ if (c.charAt(c.length-1)=="+") c=c.substring(0,c.length-1);
+ return c;
+}
+function _uGC(l,n,s) {
+ if (!l || l=="" || !n || n=="" || !s || s=="") return "-";
+ var i,i2,i3,c="-";
+ i=l.indexOf(n);
+ i3=n.indexOf("=")+1;
+ if (i > -1) {
+  i2=l.indexOf(s,i); if (i2 < 0) { i2=l.length; }
+  c=l.substring((i+i3),i2);
+ }
+ return c;
+}
+function _uDomain() {
+ if (!_udn || _udn=="" || _udn=="none") { _udn=""; return 1; }
+ if (_udn=="auto") {
+  var d=_ubd.domain;
+  if (d.substring(0,4)=="www.") {
+   d=d.substring(4,d.length);
+  }
+  _udn=d;
+ }
+ _udn = _udn.toLowerCase(); 
+ if (_uhash=="off") return 1;
+ return _uHash(_udn);
+}
+function _uHash(d) {
+ if (!d || d=="") return 1;
+ var h=0,g=0;
+ for (var i=d.length-1;i>=0;i--) {
+  var c=parseInt(d.charCodeAt(i));
+  h=((h << 6) & 0xfffffff) + c + (c << 14);
+  if ((g=h & 0xfe00000)!=0) h=(h ^ (g >> 21));
+ }
+ return h;
+}
+function _uFixA(c,s,t) {
+ if (!c || c=="" || !s || s=="" || !t || t=="") return "-";
+ var a=_uGC(c,"__utma="+_udh+".",s);
+ var lt=0,i=0;
+ if ((i=a.lastIndexOf(".")) > 9) {
+  _uns=a.substring(i+1,a.length);
+  _uns=(_uns*1)+1;
+  a=a.substring(0,i);
+  if ((i=a.lastIndexOf(".")) > 7) {
+   lt=a.substring(i+1,a.length);
+   a=a.substring(0,i);
+  }
+  if ((i=a.lastIndexOf(".")) > 5) {
+   a=a.substring(0,i);
+  }
+  a+="."+lt+"."+t+"."+_uns;
+ }
+ return a;
+}
+function _uTrim(s) {
+  if (!s || s=="") return "";
+  while ((s.charAt(0)==' ') || (s.charAt(0)=='\n') || (s.charAt(0,1)=='\r')) s=s.substring(1,s.length);
+  while ((s.charAt(s.length-1)==' ') || (s.charAt(s.length-1)=='\n') || (s.charAt(s.length-1)=='\r')) s=s.substring(0,s.length-1);
+  return s;
+}
+function _uEC(s) {
+  var n="";
+  if (!s || s=="") return "";
+  for (var i=0;i<s.length;i++) {if (s.charAt(i)==" ") n+="+"; else n+=s.charAt(i);}
+  return n;
+}
+function __utmVisitorCode(f) {
+ var r=0,t=0,i=0,i2=0,m=31;
+ var a=_uGC(_ubd.cookie,"__utma="+_udh+".",";");
+ if ((i=a.indexOf(".",0))<0) return;
+ if ((i2=a.indexOf(".",i+1))>0) r=a.substring(i+1,i2); else return "";  
+ if ((i=a.indexOf(".",i2+1))>0) t=a.substring(i2+1,i); else return "";  
+ if (f) {
+  return r;
+ } else {
+  var c=new Array('A','B','C','D','E','F','G','H','J','K','L','M','N','P','R','S','T','U','V','W','X','Y','Z','1','2','3','4','5','6','7','8','9');
+  return c[r>>28&m]+c[r>>23&m]+c[r>>18&m]+c[r>>13&m]+"-"+c[r>>8&m]+c[r>>3&m]+c[((r&7)<<2)+(t>>30&3)]+c[t>>25&m]+c[t>>20&m]+"-"+c[t>>15&m]+c[t>>10&m]+c[t>>5&m]+c[t&m];
+ }
+}
+function _uIN(n) {
+ if (!n) return false;
+ for (var i=0;i<n.length;i++) {
+  var c=n.charAt(i);
+  if ((c<"0" || c>"9") && (c!=".")) return false;
+ }
+ return true;
+}
+function _uES(s,u) {
+ if (typeof(encodeURIComponent) == 'function') {
+  if (u) return encodeURI(s);
+  else return encodeURIComponent(s);
+ } else {
+  return escape(s);
+ }
+}
+function _uUES(s) {
+ if (typeof(decodeURIComponent) == 'function') {
+  return decodeURIComponent(s);
+ } else {
+  return unescape(s);
+ }
+}
+function _uVG() {
+ if((_udn.indexOf("www.google.") == 0 || _udn.indexOf(".google.") == 0 || _udn.indexOf("google.") == 0) && _utcp=='/' && _udn.indexOf("google.org")==-1) {
+  return false;
+ }
+ return true;
+}
+function _uSP() {
+ var s=100;
+ if (_usample) s=_usample;
+ if(s>=100 || s<=0) return true;
+ return ((__utmVisitorCode(1)%10000)<(s*100));
+}
+function urchinPathCopy(p){
+ var d=document,nx,tx,sx,i,c,cs,t,h,o;
+ cs=new Array("a","b","c","v","x","z");
+ h=_uDomain(); if (_udn && _udn!="") o=" domain="+_udn+";";
+ nx=_uNx()+";";
+ tx=new Date(); tx.setTime(tx.getTime()+(_utimeout*1000));
+ tx=tx.toGMTString()+";";
+ sx=new Date(); sx.setTime(sx.getTime()+(_ucto*1000));
+ sx=sx.toGMTString()+";";
+ for (i=0;i<6;i++){
+  t=" expires=";
+  if (i==1) t+=tx; else if (i==2) t=""; else if (i==5) t+=sx; else t+=nx;
+  c=_uGC(d.cookie,"__utm"+cs[i]+"="+h,";");
+  if (c!="-") d.cookie="__utm"+cs[i]+"="+c+"; path="+p+";"+t+o;
+ }
+}
+function _uCO() {
+ if (!_utk || _utk=="" || _utk.length<10) return;
+ var d='www.google.com';
+ if (_utk.charAt(0)=='!') d='analytics.corp.google.com';
+ _ubd.cookie="GASO="+_utk+"; path="+_utcp+";"+_udo;
+ var sc=document.createElement('script');
+ sc.type='text/javascript';
+ sc.id="_gasojs";
+ sc.src='https://'+d+'/analytics/reporting/overlay_js?gaso='+_utk+'&'+Math.random();
+ document.getElementsByTagName('head')[0].appendChild(sc);  
+}
+function _uGT() {
+ var h=location.hash, a;
+ if (h && h!="" && h.indexOf("#gaso=")==0) {
+  a=_uGC(h,"gaso=","&");
+ } else {
+  a=_uGC(_ubd.cookie,"GASO=",";");
+ }
+ return a;
+}
+var _utk=_uGT();
+if (_utk && _utk!="" && _utk.length>10 && _utk.indexOf("=")==-1) {
+ if (window.addEventListener) {
+  window.addEventListener('load', _uCO, false); 
+ } else if (window.attachEvent) { 
+  window.attachEvent('onload', _uCO);
+ }
+}
+
+function _uNx() {
+  return (new Date((new Date()).getTime()+63072000000)).toGMTString();
+}