You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@myfaces.apache.org by mm...@apache.org on 2005/09/15 16:00:29 UTC

svn commit: r289236 - /myfaces/sandbox/trunk/src/java/org/apache/myfaces/custom/inputsuggestajax/resource/prototype.js

Author: mmarinschek
Date: Thu Sep 15 07:00:24 2005
New Revision: 289236

URL: http://svn.apache.org/viewcvs?rev=289236&view=rev
Log:
new version 1.3.1

Modified:
    myfaces/sandbox/trunk/src/java/org/apache/myfaces/custom/inputsuggestajax/resource/prototype.js

Modified: myfaces/sandbox/trunk/src/java/org/apache/myfaces/custom/inputsuggestajax/resource/prototype.js
URL: http://svn.apache.org/viewcvs/myfaces/sandbox/trunk/src/java/org/apache/myfaces/custom/inputsuggestajax/resource/prototype.js?rev=289236&r1=289235&r2=289236&view=diff
==============================================================================
--- myfaces/sandbox/trunk/src/java/org/apache/myfaces/custom/inputsuggestajax/resource/prototype.js (original)
+++ myfaces/sandbox/trunk/src/java/org/apache/myfaces/custom/inputsuggestajax/resource/prototype.js Thu Sep 15 07:00:24 2005
@@ -1,1085 +1,1038 @@
-/*  Prototype JavaScript framework, version 1.3.0
- *  (c) 2005 Sam Stephenson <sa...@conio.net>
- *
- *  THIS FILE IS AUTOMATICALLY GENERATED. When sending patches, please diff
- *  against the source tree, available from the Prototype darcs repository.
- *
- *  Prototype is freely distributable under the terms of an MIT-style license.
- *
- *  For details, see the Prototype web site: http://prototype.conio.net/
- *
-/*--------------------------------------------------------------------------*/
-
-var jsfState = "";
-
-var Prototype = {
-  Version: '1.3.0',
-  emptyFunction: function() {}
-}
-
-var Class = {
-  create: function() {
-    return function() {
-      this.initialize.apply(this, arguments);
-    }
-  }
-}
-
-var Abstract = new Object();
-
-Object.extend = function(destination, source) {
-  for (property in source) {
-    destination[property] = source[property];
-  }
-  return destination;
-}
-/*
-Object.prototype.extend = function(object) {
-  return Object.extend.apply(this, [this, object]);
-}
-*/
-Function.prototype.bind = function(object) {
-  var __method = this;
-  return function() {
-    __method.apply(object, arguments);
-  }
-}
-
-Function.prototype.bindAsEventListener = function(object) {
-  var __method = this;
-  return function(event) {
-    __method.call(object, event || window.event);
-  }
-}
-
-Number.prototype.toColorPart = function() {
-  var digits = this.toString(16);
-  if (this < 16) return '0' + digits;
-  return digits;
-}
-
-var Try = {
-  these: function() {
-    var returnValue;
-
-    for (var i = 0; i < arguments.length; i++) {
-      var lambda = arguments[i];
-      try {
-        returnValue = lambda();
-        break;
-      } catch (e) {}
-    }
-
-    return returnValue;
-  }
-}
-
-/*--------------------------------------------------------------------------*/
-
-var PeriodicalExecuter = Class.create();
-PeriodicalExecuter.prototype = {
-  initialize: function(callback, frequency) {
-    this.callback = callback;
-    this.frequency = frequency;
-    this.currentlyExecuting = false;
-
-    this.registerCallback();
-  },
-
-  registerCallback: function() {
-    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
-  },
-
-  onTimerEvent: function() {
-    if (!this.currentlyExecuting) {
-      try {
-        this.currentlyExecuting = true;
-        this.callback();
-      } finally {
-        this.currentlyExecuting = false;
-      }
-    }
-  }
-}
-
-/*--------------------------------------------------------------------------*/
-
-function $() {
-  var elements = new Array();
-
-  for (var i = 0; i < arguments.length; i++) {
-    var element = arguments[i];
-    if (typeof element == 'string')
-      element = document.getElementById(element);
-
-    if (arguments.length == 1)
-      return element;
-
-    elements.push(element);
-  }
-
-  return elements;
-}
-
-if (!Array.prototype.push) {
-  Array.prototype.push = function() {
-		var startLength = this.length;
-		for (var i = 0; i < arguments.length; i++)
-      this[startLength + i] = arguments[i];
-	  return this.length;
-  }
-}
-
-if (!Function.prototype.apply) {
-  // Based on code from http://www.youngpup.net/
-  Function.prototype.apply = function(object, parameters) {
-    var parameterStrings = new Array();
-    if (!object)     object = window;
-    if (!parameters) parameters = new Array();
-
-    for (var i = 0; i < parameters.length; i++)
-      parameterStrings[i] = 'parameters[' + i + ']';
-
-    object.__apply__ = this;
-    var result = eval('object.__apply__(' +
-      parameterStrings[i].join(', ') + ')');
-    object.__apply__ = null;
-
-    return result;
-  }
-}
-
-Object.extend(String.prototype, {
-  stripTags: function() {
-    return this.replace(/<\/?[^>]+>/gi, '');
-  },
-
-  escapeHTML: function() {
-    var div = document.createElement('div');
-    var text = document.createTextNode(this);
-    div.appendChild(text);
-    return div.innerHTML;
-  },
-
-  unescapeHTML: function() {
-    var div = document.createElement('div');
-    div.innerHTML = this.stripTags();
-    return div.childNodes[0].nodeValue;
-  }
-});
-
-var Ajax = {
-  getTransport: function() {
-    return Try.these(
-      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
-      function() {return new ActiveXObject('Microsoft.XMLHTTP')},
-      function() {return new XMLHttpRequest()}
-    ) || false;
-  }
-}
-
-Ajax.Base = function() {};
-Ajax.Base.prototype = {
-  setOptions: function(options) {
-    this.options = Object.extend({
-      method:       'post',
-      asynchronous: true,
-      parameters:   ''
-    }, options || {});
-  },
-
-  responseIsSuccess: function() {
-    return this.transport.status == undefined
-        || this.transport.status == 0
-        || (this.transport.status >= 200 && this.transport.status < 300);
-  },
-
-  responseIsFailure: function() {
-    return !this.responseIsSuccess();
-  }
-}
-
-Ajax.Request = Class.create();
-Ajax.Request.Events =
-  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
-
-Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
-  initialize: function(url, options) {
-    this.transport = Ajax.getTransport();
-    this.setOptions(options);
-    this.request(url);
-  },
-
-
-  request: function(url) {
-
-    var parameters = this.options.parameters || '';
-
-    if (parameters.length > 0) parameters += '&_=';
-
-    try {
-      if (this.options.method == 'get')
-        url += '?' + parameters;
-
-      this.transport.open(this.options.method, url,
-        this.options.asynchronous);
-
-      if (this.options.asynchronous) {
-        this.transport.onreadystatechange = this.onStateChange.bind(this);
-        setTimeout((function() {this.respondToReadyState(1)}).bind(this), 10);
-      }
-
-      this.setRequestHeaders();
-
-
-
-      var body = this.options.postBody ? this.options.postBody : parameters;
-
-      this.transport.send(this.options.method == 'post' ? body : null);
-
-    } catch (e) {
-    }
-  },
-
-  setRequestHeaders: function() {
-    var requestHeaders =
-      ['X-Requested-With', 'XMLHttpRequest',
-       'X-Prototype-Version', Prototype.Version];
-
-    if (this.options.method == 'post') {
-      requestHeaders.push('Content-type',
-        'application/x-www-form-urlencoded');
-
-      /* Force "Connection: close" for Mozilla browsers to work around
-       * a bug where XMLHttpReqeuest sends an incorrect Content-length
-       * header. See Mozilla Bugzilla #246651.
-       */
-      if (this.transport.overrideMimeType)
-        requestHeaders.push('Connection', 'close');
-    }
-
-    if (this.options.requestHeaders)
-      requestHeaders.push.apply(requestHeaders, this.options.requestHeaders);
-
-    for (var i = 0; i < requestHeaders.length; i += 2)
-      this.transport.setRequestHeader(requestHeaders[i], requestHeaders[i+1]);
-  },
-
-  onStateChange: function() {
-    var readyState = this.transport.readyState;
-    if (readyState != 1)
-      this.respondToReadyState(this.transport.readyState);
-  },
-
-  respondToReadyState: function(readyState) {
-    var event = Ajax.Request.Events[readyState];
-
-    if (event == 'Complete')
-      (this.options['on' + this.transport.status]
-       || this.options['on' + this.responseIsSuccess ? 'Success' : 'Failure']
-       || Prototype.emptyFunction)(this.transport);
-
-    (this.options['on' + event] || Prototype.emptyFunction)(this.transport);
-  }
-});
-
-Ajax.Updater = Class.create();
-Ajax.Updater.ScriptFragment = '(?:<script.*?>)((\n|.)*?)(?:<\/script>)';
-
-Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
-  initialize: function(container, url, options) {
-    this.containers = {
-      success: container.success ? $(container.success) : $(container),
-      failure: container.failure ? $(container.failure) :
-        (container.success ? null : $(container))
-    }
-    //this.jsfState="";
-    this.transport = Ajax.getTransport();
-    this.setOptions(options);
-
-    var onComplete = this.options.onComplete || Prototype.emptyFunction;
-    this.options.onComplete = (function() {
-      this.updateContent();
-      onComplete(this.transport);
-    }).bind(this);
-
-    this.request(url);
-  },
-
-
-
-  updateContent: function() {
-    var receiver = this.responseIsSuccess() ?
-      this.containers.success : this.containers.failure;
-
-    var match    = new RegExp(Ajax.Updater.ScriptFragment, 'img');
-    var response = this.transport.responseText.replace(match, '');
-    var scripts  = this.transport.responseText.match(match);
-    ////////////////////////////////////////////////////////////////////////////////////////////////////////
-
-
-    updateJSFStates(response);
-
-
-    if (receiver) {
-      if (this.options.insertion) {
-        new this.options.insertion(receiver, response);
-      } else {
-        receiver.innerHTML = response;
-      }
-    }
-
-    if (this.responseIsSuccess()) {
-      if (this.onComplete)
-        setTimeout((function() {this.onComplete(
-          this.transport)}).bind(this), 10);
-    }
-
-    if (this.options.evalScripts && scripts) {
-      match = new RegExp(Ajax.Updater.ScriptFragment, 'im');
-      setTimeout((function() {
-        for (var i = 0; i < scripts.length; i++)
-          eval(scripts[i].match(match)[1]);
-      }).bind(this), 10);
-    }
-  },
-
-
-
-});
-
-
-
-
-Ajax.PeriodicalUpdater = Class.create();
-Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
-  initialize: function(container, url, options) {
-
-    this.setOptions(options);
-
-    this.onComplete = this.options.onComplete;
-
-    this.frequency = (this.options.frequency || 2);
-    
-    this.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.onComplete = undefined;
-    clearTimeout(this.timer);
-    (this.onComplete || Ajax.emptyFunction).apply(this, arguments);
-  },
-
-  updateComplete: function(request) {
-    if (this.options.decay) {
-      this.decay = (request.responseText == this.lastText ?
-        this.decay * this.options.decay : 1);
-
-      this.lastText = request.responseText;
-    }
-    this.timer = setTimeout(this.onTimerEvent.bind(this),
-      this.decay * this.frequency * 1000);
-  },
-
-  onTimerEvent: function() {
-    this.updater = new Ajax.Updater(this.container, this.url, this.options);
-  }
-});
-
-updateJSFStates= function(response){
-    var begin = response.search("jsf_state=") + 10;
-    var end = response.search("jsf_state_end");
-
-    jsfState = response.substring(begin, end);
-    response = response.substring(0, begin -10);
-
-       for (i=0; i<document.forms.length;i++){
-            for (j=0; j<document.forms[i].elements.length; j++){
-                if ( document.forms[i].elements[j].id.match(/(jsf_state_64)$/)){
-                    document.forms[i].elements[j].value = jsfState;
-                }
-            }
-       }
-}  ;
-
-document.getElementsByClassName = function(className) {
-  var children = document.getElementsByTagName('*') || document.all;
-  var elements = new Array();
-
-  for (var i = 0; i < children.length; i++) {
-    var child = children[i];
-    var classNames = child.className.split(' ');
-    for (var j = 0; j < classNames.length; j++) {
-      if (classNames[j] == className) {
-        elements.push(child);
-        break;
-      }
-    }
-  }
-
-  return elements;
-}
-
-
-/*--------------------------------------------------------------------------*/
-
-if (!window.Element) {
-  var Element = new Object();
-}
-
-Object.extend(Element, {
-  toggle: function() {
-    for (var i = 0; i < arguments.length; i++) {
-      var element = $(arguments[i]);
-      element.style.display =
-        (element.style.display == 'none' ? '' : 'none');
-    }
-  },
-
-  hide: function() {
-    for (var i = 0; i < arguments.length; i++) {
-      var element = $(arguments[i]);
-      element.style.display = 'none';
-    }
-  },
-
-  show: function() {
-    for (var i = 0; i < arguments.length; i++) {
-      var element = $(arguments[i]);
-      element.style.display = '';
-    }
-  },
-
-  remove: function(element) {
-    element = $(element);
-    element.parentNode.removeChild(element);
-  },
-
-  getHeight: function(element) {
-    element = $(element);
-    return element.offsetHeight;
-  },
-
-  hasClassName: function(element, className) {
-    element = $(element);
-    if (!element)
-      return;
-    var a = element.className.split(' ');
-    for (var i = 0; i < a.length; i++) {
-      if (a[i] == className)
-        return true;
-    }
-    return false;
-  },
-
-  addClassName: function(element, className) {
-    element = $(element);
-    Element.removeClassName(element, className);
-    element.className += ' ' + className;
-  },
-
-  removeClassName: function(element, className) {
-    element = $(element);
-    if (!element)
-      return;
-    var newClassName = '';
-    var a = element.className.split(' ');
-    for (var i = 0; i < a.length; i++) {
-      if (a[i] != className) {
-        if (i > 0)
-          newClassName += ' ';
-        newClassName += a[i];
-      }
-    }
-    element.className = newClassName;
-  },
-
-  // removes whitespace-only text node children
-  cleanWhitespace: function(element) {
-    var element = $(element);
-    for (var i = 0; i < element.childNodes.length; i++) {
-      var node = element.childNodes[i];
-      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
-        Element.remove(node);
-    }
-  }
-});
-
-var Toggle = new Object();
-Toggle.display = Element.toggle;
-
-/*--------------------------------------------------------------------------*/
-
-Abstract.Insertion = function(adjacency) {
-  this.adjacency = adjacency;
-}
-
-Abstract.Insertion.prototype = {
-  initialize: function(element, content) {
-    this.element = $(element);
-    this.content = content;
-
-    if (this.adjacency && this.element.insertAdjacentHTML) {
-      this.element.insertAdjacentHTML(this.adjacency, this.content);
-    } else {
-      this.range = this.element.ownerDocument.createRange();
-      if (this.initializeRange) this.initializeRange();
-      this.fragment = this.range.createContextualFragment(this.content);
-      this.insertContent();
-    }
-  }
-}
-
-var Insertion = new Object();
-
-Insertion.Before = Class.create();
-Insertion.Before.prototype = Object.extend(new Abstract.Insertion('beforeBegin'), {
-  initializeRange: function() {
-    this.range.setStartBefore(this.element);
-  },
-
-  insertContent: function() {
-    this.element.parentNode.insertBefore(this.fragment, this.element);
-  }
-});
-
-Insertion.Top = Class.create();
-Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {
-  initializeRange: function() {
-    this.range.selectNodeContents(this.element);
-    this.range.collapse(true);
-  },
-
-  insertContent: function() {
-    this.element.insertBefore(this.fragment, this.element.firstChild);
-  }
-});
-
-Insertion.Bottom = Class.create();
-Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'), {
-  initializeRange: function() {
-    this.range.selectNodeContents(this.element);
-    this.range.collapse(this.element);
-  },
-
-  insertContent: function() {
-    this.element.appendChild(this.fragment);
-  }
-});
-
-Insertion.After = Class.create();
-Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {
-  initializeRange: function() {
-    this.range.setStartAfter(this.element);
-  },
-
-  insertContent: function() {
-    this.element.parentNode.insertBefore(this.fragment,
-      this.element.nextSibling);
-  }
-});
-
-var Field = {
-  clear: function() {
-    for (var i = 0; i < arguments.length; i++)
-      $(arguments[i]).value = '';
-  },
-
-  focus: function(element) {
-    $(element).focus();
-  },
-
-  present: function() {
-    for (var i = 0; i < arguments.length; i++)
-      if ($(arguments[i]).value == '') return false;
-    return true;
-  },
-
-  select: function(element) {
-    $(element).select();
-  },
-
-  activate: function(element) {
-    $(element).focus();
-    $(element).select();
-  }
-}
-
-/*--------------------------------------------------------------------------*/
-
-var Form = {
-  serialize: function(form) {
-    var elements = Form.getElements($(form));
-    var queryComponents = new Array();
-
-    for (var i = 0; i < elements.length; i++) {
-      var queryComponent = Form.Element.serialize(elements[i]);
-      if (queryComponent)
-        queryComponents.push(queryComponent);
-    }
-
-    return queryComponents.join('&');
-  },
-
-  getElements: function(form) {
-    var form = $(form);
-    var elements = new Array();
-
-    for (tagName in Form.Element.Serializers) {
-      var tagElements = form.getElementsByTagName(tagName);
-      for (var j = 0; j < tagElements.length; j++)
-        elements.push(tagElements[j]);
-    }
-    return elements;
-  },
-
-  getInputs: function(form, typeName, name) {
-    var form = $(form);
-    var inputs = form.getElementsByTagName('input');
-
-    if (!typeName && !name)
-      return inputs;
-
-    var matchingInputs = new Array();
-    for (var i = 0; i < inputs.length; i++) {
-      var input = inputs[i];
-      if ((typeName && input.type != typeName) ||
-          (name && input.name != name))
-        continue;
-      matchingInputs.push(input);
-    }
-
-    return matchingInputs;
-  },
-
-  disable: function(form) {
-    var elements = Form.getElements(form);
-    for (var i = 0; i < elements.length; i++) {
-      var element = elements[i];
-      element.blur();
-      element.disabled = 'true';
-    }
-  },
-
-  enable: function(form) {
-    var elements = Form.getElements(form);
-    for (var i = 0; i < elements.length; i++) {
-      var element = elements[i];
-      element.disabled = '';
-    }
-  },
-
-  focusFirstElement: function(form) {
-    var form = $(form);
-    var elements = Form.getElements(form);
-    for (var i = 0; i < elements.length; i++) {
-      var element = elements[i];
-      if (element.type != 'hidden' && !element.disabled) {
-        Field.activate(element);
-        break;
-      }
-    }
-  },
-
-  reset: function(form) {
-    $(form).reset();
-  }
-}
-
-Form.Element = {
-  serialize: function(element) {
-    var element = $(element);
-    var method = element.tagName.toLowerCase();
-    var parameter = Form.Element.Serializers[method](element);
-
-    if (parameter)
-      return encodeURIComponent(parameter[0]) + '=' +
-        encodeURIComponent(parameter[1]);
-  },
-
-  getValue: function(element) {
-    var element = $(element);
-    var method = element.tagName.toLowerCase();
-    var parameter = Form.Element.Serializers[method](element);
-
-    if (parameter)
-      return parameter[1];
-  }
-}
-
-Form.Element.Serializers = {
-  input: function(element) {
-    switch (element.type.toLowerCase()) {
-      case 'submit':
-      case 'hidden':
-      case 'password':
-      case 'text':
-        return Form.Element.Serializers.textarea(element);
-      case 'checkbox':
-      case 'radio':
-        return Form.Element.Serializers.inputSelector(element);
-    }
-    return false;
-  },
-
-  inputSelector: function(element) {
-    if (element.checked)
-      return [element.name, element.value];
-  },
-
-  textarea: function(element) {
-    return [element.name, element.value];
-  },
-
-  select: function(element) {
-    var value = '';
-    if (element.type == 'select-one') {
-      var index = element.selectedIndex;
-      if (index >= 0)
-        value = element.options[index].value || element.options[index].text;
-    } else {
-      value = new Array();
-      for (var i = 0; i < element.length; i++) {
-        var opt = element.options[i];
-        if (opt.selected)
-          value.push(opt.value || opt.text);
-      }
-    }
-    return [element.name, value];
-  }
-}
-
-/*--------------------------------------------------------------------------*/
-
-var $F = Form.Element.getValue;
-
-/*--------------------------------------------------------------------------*/
-
-Abstract.TimedObserver = function() {}
-Abstract.TimedObserver.prototype = {
-  initialize: function(element, frequency, callback) {
-    this.frequency = frequency;
-    this.element   = $(element);
-    this.callback  = callback;
-
-    this.lastValue = this.getValue();
-    this.registerCallback();
-  },
-
-  registerCallback: function() {
-    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
-  },
-
-  onTimerEvent: function() {
-    var value = this.getValue();
-    if (this.lastValue != value) {
-      this.callback(this.element, value);
-      this.lastValue = value;
-    }
-  }
-}
-
-Form.Element.Observer = Class.create();
-Form.Element.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
-  getValue: function() {
-    return Form.Element.getValue(this.element);
-  }
-});
-
-Form.Observer = Class.create();
-Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
-  getValue: function() {
-    return Form.serialize(this.element);
-  }
-});
-
-/*--------------------------------------------------------------------------*/
-
-Abstract.EventObserver = function() {}
-Abstract.EventObserver.prototype = {
-  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() {
-    var elements = Form.getElements(this.element);
-    for (var i = 0; i < elements.length; i++)
-      this.registerCallback(elements[i]);
-  },
-
-  registerCallback: function(element) {
-    if (element.type) {
-      switch (element.type.toLowerCase()) {
-        case 'checkbox':
-        case 'radio':
-          element.target = this;
-          element.prev_onclick = element.onclick || Prototype.emptyFunction;
-          element.onclick = function() {
-            this.prev_onclick();
-            this.target.onElementEvent();
-          }
-          break;
-        case 'password':
-        case 'text':
-        case 'textarea':
-        case 'select-one':
-        case 'select-multiple':
-          element.target = this;
-          element.prev_onchange = element.onchange || Prototype.emptyFunction;
-          element.onchange = function() {
-            this.prev_onchange();
-            this.target.onElementEvent();
-          }
-          break;
-      }
-    }
-  }
-}
-
-Form.Element.EventObserver = Class.create();
-Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
-  getValue: function() {
-    return Form.Element.getValue(this.element);
-  }
-});
-
-Form.EventObserver = Class.create();
-Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
-  getValue: function() {
-    return Form.serialize(this.element);
-  }
-});
-
-
-if (!window.Event) {
-  var Event = new Object();
-}
-
-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,
-
-  element: function(event) {
-    return event.target || event.srcElement;
-  },
-
-  isLeftClick: function(event) {
-    return (((event.which) && (event.which == 1)) ||
-            ((event.button) && (event.button == 1)));
-  },
-
-  pointerX: function(event) {
-    return event.pageX || (event.clientX +
-      (document.documentElement.scrollLeft || document.body.scrollLeft));
-  },
-
-  pointerY: function(event) {
-    return event.pageY || (event.clientY +
-      (document.documentElement.scrollTop || document.body.scrollTop));
-  },
-
-  stop: function(event) {
-    if (event.preventDefault) {
-      event.preventDefault();
-      event.stopPropagation();
-    } else {
-      event.returnValue = false;
-    }
-  },
-
-  // find the first node with the given tagName, starting from the
-  // node the event was triggered on; traverses the DOM upwards
-  findElement: function(event, tagName) {
-    var element = Event.element(event);
-    while (element.parentNode && (!element.tagName ||
-        (element.tagName.toUpperCase() != tagName.toUpperCase())))
-      element = element.parentNode;
-    return element;
-  },
-
-  observers: false,
-
-  _observeAndCache: function(element, name, observer, useCapture) {
-    if(!this.observers) this.observers = [];
-    if(element.addEventListener) {
-      this.observers.push([element,name,observer,useCapture]);
-      element.addEventListener(name, observer, useCapture);
-    } else if (element.attachEvent) {
-      this.observers.push([element,name,observer,useCapture]);
-      element.attachEvent('on'+name, observer);
-    }
-  },
-
-  unloadCache: function() {
-    if(!Event.observers) return;
-    for(var i=0; i<Event.observers.length; i++) {
-      Event.stopObserving(Event.observers[i][0],Event.observers[i][1],Event.observers[i][2],Event.observers[i][3]);
-      Event.observers[i][0] = null;
-    }
-    Event.observers = false;
-  },
-
-  observe: function(element, name, observer, useCapture) {
-    var element = $(element);
-    useCapture = useCapture || false;
-
-    if (name == 'keypress') {
-      if (navigator.appVersion.indexOf('AppleWebKit') > 0) {
-        this._observeAndCache(element, 'keydown', observer, useCapture);
-        return;
-      }
-      this._observeAndCache(element, 'keypress', observer, useCapture);
-    } else {
-      this._observeAndCache(element, name, observer, useCapture);
-    }
-  },
-
-  stopObserving: function(element, name, observer, useCapture) {
-    var element = $(element);
-    useCapture = useCapture || false;
-
-    if (name == 'keypress') {
-      if (navigator.appVersion.indexOf('AppleWebKit') > 0) {
-        element.removeEventListener('keydown', observer, useCapture);
-        return;
-      }
-      if (element.removeEventListener) {
-        element.removeEventListener('keypress', observer, useCapture);
-      } else if (element.detachEvent) {
-        element.detachEvent('onkeydown', observer);
-      }
-    } else {
-      if (element.removeEventListener) {
-        element.removeEventListener(name, observer, useCapture);
-      } else if (element.detachEvent) {
-        element.detachEvent('on' + name, observer);
-      }
-    }
-  }
-});
-
-// prevent memory leaks
-Event.observe(window,'unload', Event.unloadCache, false);
-
-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;
-  },
-
-  realOffset: function(element) {
-    var valueT = 0, valueL = 0;
-    do {
-      valueT += element.scrollTop  || 0;
-      valueL += element.scrollLeft || 0;
-      element = element.parentNode;
-    } while (element);
-    return [valueL, valueT];
-  },
-
-  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];
-  },
-
-  // 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 = this.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 = this.realOffset(element);
-
-    this.xcomp = x + offsetcache[0] - this.deltaX;
-    this.ycomp = y + offsetcache[1] - this.deltaY;
-    this.offset = this.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;
-  },
-
-  clone: function(source, target) {
-    source = $(source);
-    target = $(target);
-    target.style.position = 'absolute';
-    var offsets = this.cumulativeOffset(source);
-    target.style.top    = offsets[1] + 'px';
-    target.style.left   = offsets[0] + 'px';
-    target.style.width  = source.offsetWidth + 'px';
-    target.style.height = source.offsetHeight + 'px';
-  }
-}
+/*  Prototype JavaScript framework, version 1.3.1
+ *  (c) 2005 Sam Stephenson <sa...@conio.net>
+ *
+ *  THIS FILE IS AUTOMATICALLY GENERATED. When sending patches, please diff
+ *  against the source tree, available from the Prototype darcs repository. 
+ *
+ *  Prototype is freely distributable under the terms of an MIT-style license.
+ *
+ *  For details, see the Prototype web site: http://prototype.conio.net/
+ *
+/*--------------------------------------------------------------------------*/
+
+var Prototype = {
+  Version: '1.3.1',
+  emptyFunction: function() {}
+}
+
+var Class = {
+  create: function() {
+    return function() { 
+      this.initialize.apply(this, arguments);
+    }
+  }
+}
+
+var Abstract = new Object();
+
+Object.extend = function(destination, source) {
+  for (property in source) {
+    destination[property] = source[property];
+  }
+  return destination;
+}
+
+Object.prototype.extend = function(object) {
+  return Object.extend.apply(this, [this, object]);
+}
+
+Function.prototype.bind = function(object) {
+  var __method = this;
+  return function() {
+    __method.apply(object, arguments);
+  }
+}
+
+Function.prototype.bindAsEventListener = function(object) {
+  var __method = this;
+  return function(event) {
+    __method.call(object, event || window.event);
+  }
+}
+
+Number.prototype.toColorPart = function() {
+  var digits = this.toString(16);
+  if (this < 16) return '0' + digits;
+  return digits;
+}
+
+var Try = {
+  these: function() {
+    var returnValue;
+
+    for (var i = 0; i < arguments.length; i++) {
+      var lambda = arguments[i];
+      try {
+        returnValue = lambda();
+        break;
+      } catch (e) {}
+    }
+
+    return returnValue;
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var PeriodicalExecuter = Class.create();
+PeriodicalExecuter.prototype = {
+  initialize: function(callback, frequency) {
+    this.callback = callback;
+    this.frequency = frequency;
+    this.currentlyExecuting = false;
+
+    this.registerCallback();
+  },
+
+  registerCallback: function() {
+    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+  },
+
+  onTimerEvent: function() {
+    if (!this.currentlyExecuting) {
+      try { 
+        this.currentlyExecuting = true;
+        this.callback(); 
+      } finally { 
+        this.currentlyExecuting = false;
+      }
+    }
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+function $() {
+  var elements = new Array();
+
+  for (var i = 0; i < arguments.length; i++) {
+    var element = arguments[i];
+    if (typeof element == 'string')
+      element = document.getElementById(element);
+
+    if (arguments.length == 1) 
+      return element;
+
+    elements.push(element);
+  }
+
+  return elements;
+}
+
+if (!Array.prototype.push) {
+  Array.prototype.push = function() {
+		var startLength = this.length;
+		for (var i = 0; i < arguments.length; i++)
+      this[startLength + i] = arguments[i];
+	  return this.length;
+  }
+}
+
+if (!Function.prototype.apply) {
+  // Based on code from http://www.youngpup.net/
+  Function.prototype.apply = function(object, parameters) {
+    var parameterStrings = new Array();
+    if (!object)     object = window;
+    if (!parameters) parameters = new Array();
+    
+    for (var i = 0; i < parameters.length; i++)
+      parameterStrings[i] = 'parameters[' + i + ']';
+    
+    object.__apply__ = this;
+    var result = eval('object.__apply__(' + 
+      parameterStrings.join(', ') + ')');
+    object.__apply__ = null;
+    
+    return result;
+  }
+}
+
+String.prototype.extend({
+  stripTags: function() {
+    return this.replace(/<\/?[^>]+>/gi, '');
+  },
+
+  escapeHTML: function() {
+    var div = document.createElement('div');
+    var text = document.createTextNode(this);
+    div.appendChild(text);
+    return div.innerHTML;
+  },
+
+  unescapeHTML: function() {
+    var div = document.createElement('div');
+    div.innerHTML = this.stripTags();
+    return div.childNodes[0].nodeValue;
+  }
+});
+
+var Ajax = {
+  getTransport: function() {
+    return Try.these(
+      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
+      function() {return new ActiveXObject('Microsoft.XMLHTTP')},
+      function() {return new XMLHttpRequest()}
+    ) || false;
+  }
+}
+
+Ajax.Base = function() {};
+Ajax.Base.prototype = {
+  setOptions: function(options) {
+    this.options = {
+      method:       'post',
+      asynchronous: true,
+      parameters:   ''
+    }.extend(options || {});
+  },
+
+  responseIsSuccess: function() {
+    return this.transport.status == undefined
+        || this.transport.status == 0 
+        || (this.transport.status >= 200 && this.transport.status < 300);
+  },
+
+  responseIsFailure: function() {
+    return !this.responseIsSuccess();
+  }
+}
+
+Ajax.Request = Class.create();
+Ajax.Request.Events = 
+  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
+
+Ajax.Request.prototype = (new Ajax.Base()).extend({
+  initialize: function(url, options) {
+    this.transport = Ajax.getTransport();
+    this.setOptions(options);
+    this.request(url);
+  },
+
+  request: function(url) {
+    var parameters = this.options.parameters || '';
+    if (parameters.length > 0) parameters += '&_=';
+
+    try {
+      if (this.options.method == 'get')
+        url += '?' + parameters;
+
+      this.transport.open(this.options.method, url,
+        this.options.asynchronous);
+
+      if (this.options.asynchronous) {
+        this.transport.onreadystatechange = this.onStateChange.bind(this);
+        setTimeout((function() {this.respondToReadyState(1)}).bind(this), 10);
+      }
+
+      this.setRequestHeaders();
+
+      var body = this.options.postBody ? this.options.postBody : parameters;
+      this.transport.send(this.options.method == 'post' ? body : null);
+
+    } catch (e) {
+    }
+  },
+
+  setRequestHeaders: function() {
+    var requestHeaders = 
+      ['X-Requested-With', 'XMLHttpRequest',
+       'X-Prototype-Version', Prototype.Version];
+
+    if (this.options.method == 'post') {
+      requestHeaders.push('Content-type', 
+        'application/x-www-form-urlencoded');
+
+      /* Force "Connection: close" for Mozilla browsers to work around
+       * a bug where XMLHttpReqeuest sends an incorrect Content-length
+       * header. See Mozilla Bugzilla #246651. 
+       */
+      if (this.transport.overrideMimeType)
+        requestHeaders.push('Connection', 'close');
+    }
+
+    if (this.options.requestHeaders)
+      requestHeaders.push.apply(requestHeaders, this.options.requestHeaders);
+
+    for (var i = 0; i < requestHeaders.length; i += 2)
+      this.transport.setRequestHeader(requestHeaders[i], requestHeaders[i+1]);
+  },
+
+  onStateChange: function() {
+    var readyState = this.transport.readyState;
+    if (readyState != 1)
+      this.respondToReadyState(this.transport.readyState);
+  },
+
+  respondToReadyState: function(readyState) {
+    var event = Ajax.Request.Events[readyState];
+
+    if (event == 'Complete')
+      (this.options['on' + this.transport.status]
+       || this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')]
+       || Prototype.emptyFunction)(this.transport);
+
+    (this.options['on' + event] || Prototype.emptyFunction)(this.transport);
+
+    /* Avoid memory leak in MSIE: clean up the oncomplete event handler */
+    if (event == 'Complete')
+      this.transport.onreadystatechange = Prototype.emptyFunction;
+  }
+});
+
+Ajax.Updater = Class.create();
+Ajax.Updater.ScriptFragment = '(?:<script.*?>)((\n|.)*?)(?:<\/script>)';
+
+Ajax.Updater.prototype.extend(Ajax.Request.prototype).extend({
+  initialize: function(container, url, options) {
+    this.containers = {
+      success: container.success ? $(container.success) : $(container),
+      failure: container.failure ? $(container.failure) :
+        (container.success ? null : $(container))
+    }
+
+    this.transport = Ajax.getTransport();
+    this.setOptions(options);
+
+    var onComplete = this.options.onComplete || Prototype.emptyFunction;
+    this.options.onComplete = (function() {
+      this.updateContent();
+      onComplete(this.transport);
+    }).bind(this);
+
+    this.request(url);
+  },
+
+  updateContent: function() {
+    var receiver = this.responseIsSuccess() ?
+      this.containers.success : this.containers.failure;
+
+    var match    = new RegExp(Ajax.Updater.ScriptFragment, 'img');
+    var response = this.transport.responseText.replace(match, '');
+    var scripts  = this.transport.responseText.match(match);
+
+    if (receiver) {
+      if (this.options.insertion) {
+        new this.options.insertion(receiver, response);
+      } else {
+        receiver.innerHTML = response;
+      }
+    }
+
+    if (this.responseIsSuccess()) {
+      if (this.onComplete)
+        setTimeout((function() {this.onComplete(
+          this.transport)}).bind(this), 10);
+    }
+
+    if (this.options.evalScripts && scripts) {
+      match = new RegExp(Ajax.Updater.ScriptFragment, 'im');
+      setTimeout((function() {
+        for (var i = 0; i < scripts.length; i++)
+          eval(scripts[i].match(match)[1]);
+      }).bind(this), 10);
+    }
+  }
+});
+
+Ajax.PeriodicalUpdater = Class.create();
+Ajax.PeriodicalUpdater.prototype = (new Ajax.Base()).extend({
+  initialize: function(container, url, options) {
+    this.setOptions(options);
+    this.onComplete = this.options.onComplete;
+
+    this.frequency = (this.options.frequency || 2);
+    this.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.onComplete = undefined;
+    clearTimeout(this.timer);
+    (this.onComplete || Ajax.emptyFunction).apply(this, arguments);
+  },
+
+  updateComplete: function(request) {
+    if (this.options.decay) {
+      this.decay = (request.responseText == this.lastText ? 
+        this.decay * this.options.decay : 1);
+
+      this.lastText = request.responseText;
+    }
+    this.timer = setTimeout(this.onTimerEvent.bind(this), 
+      this.decay * this.frequency * 1000);
+  },
+
+  onTimerEvent: function() {
+    this.updater = new Ajax.Updater(this.container, this.url, this.options);
+  }
+});
+
+document.getElementsByClassName = function(className) {
+  var children = document.getElementsByTagName('*') || document.all;
+  var elements = new Array();
+  
+  for (var i = 0; i < children.length; i++) {
+    var child = children[i];
+    var classNames = child.className.split(' ');
+    for (var j = 0; j < classNames.length; j++) {
+      if (classNames[j] == className) {
+        elements.push(child);
+        break;
+      }
+    }
+  }
+  
+  return elements;
+}
+
+/*--------------------------------------------------------------------------*/
+
+if (!window.Element) {
+  var Element = new Object();
+}
+
+Object.extend(Element, {
+  toggle: function() {
+    for (var i = 0; i < arguments.length; i++) {
+      var element = $(arguments[i]);
+      element.style.display = 
+        (element.style.display == 'none' ? '' : 'none');
+    }
+  },
+
+  hide: function() {
+    for (var i = 0; i < arguments.length; i++) {
+      var element = $(arguments[i]);
+      element.style.display = 'none';
+    }
+  },
+
+  show: function() {
+    for (var i = 0; i < arguments.length; i++) {
+      var element = $(arguments[i]);
+      element.style.display = '';
+    }
+  },
+
+  remove: function(element) {
+    element = $(element);
+    element.parentNode.removeChild(element);
+  },
+   
+  getHeight: function(element) {
+    element = $(element);
+    return element.offsetHeight; 
+  },
+
+  hasClassName: function(element, className) {
+    element = $(element);
+    if (!element)
+      return;
+    var a = element.className.split(' ');
+    for (var i = 0; i < a.length; i++) {
+      if (a[i] == className)
+        return true;
+    }
+    return false;
+  },
+
+  addClassName: function(element, className) {
+    element = $(element);
+    Element.removeClassName(element, className);
+    element.className += ' ' + className;
+  },
+
+  removeClassName: function(element, className) {
+    element = $(element);
+    if (!element)
+      return;
+    var newClassName = '';
+    var a = element.className.split(' ');
+    for (var i = 0; i < a.length; i++) {
+      if (a[i] != className) {
+        if (i > 0)
+          newClassName += ' ';
+        newClassName += a[i];
+      }
+    }
+    element.className = newClassName;
+  },
+  
+  // removes whitespace-only text node children
+  cleanWhitespace: function(element) {
+    var element = $(element);
+    for (var i = 0; i < element.childNodes.length; i++) {
+      var node = element.childNodes[i];
+      if (node.nodeType == 3 && !/\S/.test(node.nodeValue)) 
+        Element.remove(node);
+    }
+  }
+});
+
+var Toggle = new Object();
+Toggle.display = Element.toggle;
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.Insertion = function(adjacency) {
+  this.adjacency = adjacency;
+}
+
+Abstract.Insertion.prototype = {
+  initialize: function(element, content) {
+    this.element = $(element);
+    this.content = content;
+    
+    if (this.adjacency && this.element.insertAdjacentHTML) {
+      this.element.insertAdjacentHTML(this.adjacency, this.content);
+    } else {
+      this.range = this.element.ownerDocument.createRange();
+      if (this.initializeRange) this.initializeRange();
+      this.fragment = this.range.createContextualFragment(this.content);
+      this.insertContent();
+    }
+  }
+}
+
+var Insertion = new Object();
+
+Insertion.Before = Class.create();
+Insertion.Before.prototype = (new Abstract.Insertion('beforeBegin')).extend({
+  initializeRange: function() {
+    this.range.setStartBefore(this.element);
+  },
+  
+  insertContent: function() {
+    this.element.parentNode.insertBefore(this.fragment, this.element);
+  }
+});
+
+Insertion.Top = Class.create();
+Insertion.Top.prototype = (new Abstract.Insertion('afterBegin')).extend({
+  initializeRange: function() {
+    this.range.selectNodeContents(this.element);
+    this.range.collapse(true);
+  },
+  
+  insertContent: function() {  
+    this.element.insertBefore(this.fragment, this.element.firstChild);
+  }
+});
+
+Insertion.Bottom = Class.create();
+Insertion.Bottom.prototype = (new Abstract.Insertion('beforeEnd')).extend({
+  initializeRange: function() {
+    this.range.selectNodeContents(this.element);
+    this.range.collapse(this.element);
+  },
+  
+  insertContent: function() {
+    this.element.appendChild(this.fragment);
+  }
+});
+
+Insertion.After = Class.create();
+Insertion.After.prototype = (new Abstract.Insertion('afterEnd')).extend({
+  initializeRange: function() {
+    this.range.setStartAfter(this.element);
+  },
+  
+  insertContent: function() {
+    this.element.parentNode.insertBefore(this.fragment, 
+      this.element.nextSibling);
+  }
+});
+
+var Field = {
+  clear: function() {
+    for (var i = 0; i < arguments.length; i++)
+      $(arguments[i]).value = '';
+  },
+
+  focus: function(element) {
+    $(element).focus();
+  },
+  
+  present: function() {
+    for (var i = 0; i < arguments.length; i++)
+      if ($(arguments[i]).value == '') return false;
+    return true;
+  },
+  
+  select: function(element) {
+    $(element).select();
+  },
+   
+  activate: function(element) {
+    $(element).focus();
+    $(element).select();
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var Form = {
+  serialize: function(form) {
+    var elements = Form.getElements($(form));
+    var queryComponents = new Array();
+    
+    for (var i = 0; i < elements.length; i++) {
+      var queryComponent = Form.Element.serialize(elements[i]);
+      if (queryComponent)
+        queryComponents.push(queryComponent);
+    }
+    
+    return queryComponents.join('&');
+  },
+  
+  getElements: function(form) {
+    var form = $(form);
+    var elements = new Array();
+
+    for (tagName in Form.Element.Serializers) {
+      var tagElements = form.getElementsByTagName(tagName);
+      for (var j = 0; j < tagElements.length; j++)
+        elements.push(tagElements[j]);
+    }
+    return elements;
+  },
+  
+  getInputs: function(form, typeName, name) {
+    var form = $(form);
+    var inputs = form.getElementsByTagName('input');
+    
+    if (!typeName && !name)
+      return inputs;
+      
+    var matchingInputs = new Array();
+    for (var i = 0; i < inputs.length; i++) {
+      var input = inputs[i];
+      if ((typeName && input.type != typeName) ||
+          (name && input.name != name)) 
+        continue;
+      matchingInputs.push(input);
+    }
+
+    return matchingInputs;
+  },
+
+  disable: function(form) {
+    var elements = Form.getElements(form);
+    for (var i = 0; i < elements.length; i++) {
+      var element = elements[i];
+      element.blur();
+      element.disabled = 'true';
+    }
+  },
+
+  enable: function(form) {
+    var elements = Form.getElements(form);
+    for (var i = 0; i < elements.length; i++) {
+      var element = elements[i];
+      element.disabled = '';
+    }
+  },
+
+  focusFirstElement: function(form) {
+    var form = $(form);
+    var elements = Form.getElements(form);
+    for (var i = 0; i < elements.length; i++) {
+      var element = elements[i];
+      if (element.type != 'hidden' && !element.disabled) {
+        Field.activate(element);
+        break;
+      }
+    }
+  },
+
+  reset: function(form) {
+    $(form).reset();
+  }
+}
+
+Form.Element = {
+  serialize: function(element) {
+    var element = $(element);
+    var method = element.tagName.toLowerCase();
+    var parameter = Form.Element.Serializers[method](element);
+    
+    if (parameter)
+      return encodeURIComponent(parameter[0]) + '=' + 
+        encodeURIComponent(parameter[1]);                   
+  },
+  
+  getValue: function(element) {
+    var element = $(element);
+    var method = element.tagName.toLowerCase();
+    var parameter = Form.Element.Serializers[method](element);
+    
+    if (parameter) 
+      return parameter[1];
+  }
+}
+
+Form.Element.Serializers = {
+  input: function(element) {
+    switch (element.type.toLowerCase()) {
+      case 'submit':
+      case 'hidden':
+      case 'password':
+      case 'text':
+        return Form.Element.Serializers.textarea(element);
+      case 'checkbox':  
+      case 'radio':
+        return Form.Element.Serializers.inputSelector(element);
+    }
+    return false;
+  },
+
+  inputSelector: function(element) {
+    if (element.checked)
+      return [element.name, element.value];
+  },
+
+  textarea: function(element) {
+    return [element.name, element.value];
+  },
+
+  select: function(element) {
+    var value = '';
+    if (element.type == 'select-one') {
+      var index = element.selectedIndex;
+      if (index >= 0)
+        value = element.options[index].value || element.options[index].text;
+    } else {
+      value = new Array();
+      for (var i = 0; i < element.length; i++) {
+        var opt = element.options[i];
+        if (opt.selected)
+          value.push(opt.value || opt.text);
+      }
+    }
+    return [element.name, value];
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var $F = Form.Element.getValue;
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.TimedObserver = function() {}
+Abstract.TimedObserver.prototype = {
+  initialize: function(element, frequency, callback) {
+    this.frequency = frequency;
+    this.element   = $(element);
+    this.callback  = callback;
+    
+    this.lastValue = this.getValue();
+    this.registerCallback();
+  },
+  
+  registerCallback: function() {
+    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+  },
+  
+  onTimerEvent: function() {
+    var value = this.getValue();
+    if (this.lastValue != value) {
+      this.callback(this.element, value);
+      this.lastValue = value;
+    }
+  }
+}
+
+Form.Element.Observer = Class.create();
+Form.Element.Observer.prototype = (new Abstract.TimedObserver()).extend({
+  getValue: function() {
+    return Form.Element.getValue(this.element);
+  }
+});
+
+Form.Observer = Class.create();
+Form.Observer.prototype = (new Abstract.TimedObserver()).extend({
+  getValue: function() {
+    return Form.serialize(this.element);
+  }
+});
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.EventObserver = function() {}
+Abstract.EventObserver.prototype = {
+  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() {
+    var elements = Form.getElements(this.element);
+    for (var i = 0; i < elements.length; i++)
+      this.registerCallback(elements[i]);
+  },
+  
+  registerCallback: function(element) {
+    if (element.type) {
+      switch (element.type.toLowerCase()) {
+        case 'checkbox':  
+        case 'radio':
+          element.target = this;
+          element.prev_onclick = element.onclick || Prototype.emptyFunction;
+          element.onclick = function() {
+            this.prev_onclick(); 
+            this.target.onElementEvent();
+          }
+          break;
+        case 'password':
+        case 'text':
+        case 'textarea':
+        case 'select-one':
+        case 'select-multiple':
+          element.target = this;
+          element.prev_onchange = element.onchange || Prototype.emptyFunction;
+          element.onchange = function() {
+            this.prev_onchange(); 
+            this.target.onElementEvent();
+          }
+          break;
+      }
+    }    
+  }
+}
+
+Form.Element.EventObserver = Class.create();
+Form.Element.EventObserver.prototype = (new Abstract.EventObserver()).extend({
+  getValue: function() {
+    return Form.Element.getValue(this.element);
+  }
+});
+
+Form.EventObserver = Class.create();
+Form.EventObserver.prototype = (new Abstract.EventObserver()).extend({
+  getValue: function() {
+    return Form.serialize(this.element);
+  }
+});
+
+
+if (!window.Event) {
+  var Event = new Object();
+}
+
+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,
+
+  element: function(event) {
+    return event.target || event.srcElement;
+  },
+
+  isLeftClick: function(event) {
+    return (((event.which) && (event.which == 1)) ||
+            ((event.button) && (event.button == 1)));
+  },
+
+  pointerX: function(event) {
+    return event.pageX || (event.clientX + 
+      (document.documentElement.scrollLeft || document.body.scrollLeft));
+  },
+
+  pointerY: function(event) {
+    return event.pageY || (event.clientY + 
+      (document.documentElement.scrollTop || document.body.scrollTop));
+  },
+
+  stop: function(event) {
+    if (event.preventDefault) { 
+      event.preventDefault(); 
+      event.stopPropagation(); 
+    } else {
+      event.returnValue = false;
+    }
+  },
+
+  // find the first node with the given tagName, starting from the
+  // node the event was triggered on; traverses the DOM upwards
+  findElement: function(event, tagName) {
+    var element = Event.element(event);
+    while (element.parentNode && (!element.tagName ||
+        (element.tagName.toUpperCase() != tagName.toUpperCase())))
+      element = element.parentNode;
+    return element;
+  },
+
+  observers: false,
+  
+  _observeAndCache: function(element, name, observer, useCapture) {
+    if (!this.observers) this.observers = [];
+    if (element.addEventListener) {
+      this.observers.push([element, name, observer, useCapture]);
+      element.addEventListener(name, observer, useCapture);
+    } else if (element.attachEvent) {
+      this.observers.push([element, name, observer, useCapture]);
+      element.attachEvent('on' + name, observer);
+    }
+  },
+  
+  unloadCache: function() {
+    if (!Event.observers) return;
+    for (var i = 0; i < Event.observers.length; i++) {
+      Event.stopObserving.apply(this, Event.observers[i]);
+      Event.observers[i][0] = null;
+    }
+    Event.observers = false;
+  },
+
+  observe: function(element, name, observer, useCapture) {
+    var element = $(element);
+    useCapture = useCapture || false;
+    
+    if (name == 'keypress' &&
+        ((navigator.appVersion.indexOf('AppleWebKit') > 0) 
+        || element.attachEvent))
+      name = 'keydown';
+    
+    this._observeAndCache(element, name, observer, useCapture);
+  },
+
+  stopObserving: function(element, name, observer, useCapture) {
+    var element = $(element);
+    useCapture = useCapture || false;
+    
+    if (name == 'keypress' &&
+        ((navigator.appVersion.indexOf('AppleWebKit') > 0) 
+        || element.detachEvent))
+      name = 'keydown';
+    
+    if (element.removeEventListener) {
+      element.removeEventListener(name, observer, useCapture);
+    } else if (element.detachEvent) {
+      element.detachEvent('on' + name, observer);
+    }
+  }
+});
+
+/* prevent memory leaks in IE */
+Event.observe(window, 'unload', Event.unloadCache, false);
+
+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;
+  },
+
+  realOffset: function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.scrollTop  || 0;
+      valueL += element.scrollLeft || 0; 
+      element = element.parentNode;
+    } while (element);
+    return [valueL, valueT];
+  },
+
+  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];
+  },
+
+  // 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 = this.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 = this.realOffset(element);
+
+    this.xcomp = x + offsetcache[0] - this.deltaX;
+    this.ycomp = y + offsetcache[1] - this.deltaY;
+    this.offset = this.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;
+  },
+
+  clone: function(source, target) {
+    source = $(source);
+    target = $(target);
+    target.style.position = 'absolute';
+    var offsets = this.cumulativeOffset(source);
+    target.style.top    = offsets[1] + 'px';
+    target.style.left   = offsets[0] + 'px';
+    target.style.width  = source.offsetWidth + 'px';
+    target.style.height = source.offsetHeight + 'px';
+  }
+}