var Prototype = {Version: '1.4.0',ScriptFragment: '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',emptyFunction: function() {},K: function(x) {return x}};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.inspect=function(object){try{if(object==undefined)return'undefined';if(object==null)return'null';return object.inspect?object.inspect():object.toString();}catch(e){if(e instanceof RangeError)return'...';throw e;}};
Function.prototype.bind=function(){var __method=this,args=$A(arguments),object=args.shift();return function(){return __method.apply(object,args.concat($A(arguments)));}};Function.prototype.bindAsEventListener=function(object){var __method=this;return function(event){return __method.call(object,event||window.event);}};
Object.extend(Number.prototype,{toColorPart:function(){var digits=this.toString(16);if(this<16)return'0'+digits;return digits;},succ:function(){return this+1;},times:function(iterator){$R(0,this,true).each(iterator);return this;}});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;
}
Object.extend(String.prototype,{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(eval);},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]?div.childNodes[0].nodeValue:'';},toQueryParams:function(){var pairs=this.match(/^\??(.*)$/)[1].split('&');return pairs.inject({},function(params,pairString){var pair=pairString.split('=');params[pair[0]]=pair[1];return params;});},toArray:function(){return this.split('');},camelize:function(){var oStringList=this.split('-');if(oStringList.length==1)return oStringList[0];var camelizedString=this.indexOf('-')==0?oStringList[0].charAt(0).toUpperCase()+oStringList[0].substring(1):oStringList[0];for(var i=1,len=oStringList.length;i<len;i++){var s=oStringList[i];camelizedString+=s.charAt(0).toUpperCase()+s.substring(1);}return camelizedString;},inspect:function(){return"'"+this.replace('\\','\\\\').replace("'",'\\\'')+"'";}});

String.prototype.parseQuery = String.prototype.toQueryParams;

var $break    = new Object();
var $continue = new Object();

var Enumerable={each:function(iterator){var index=0;try{this._each(function(value){try{iterator(value,index++);}catch(e){if(e!=$continue)throw e;}});}catch(e){if(e!=$break)throw e;}},all:function(iterator){var result=true;this.each(function(value,index){result=result&&!!(iterator||Prototype.K)(value,index);if(!result)throw $break;});return result;},any:function(iterator){var result=true;this.each(function(value,index){if(result=!!(iterator||Prototype.K)(value,index))throw $break;});return result;},collect:function(iterator){var results=[];this.each(function(value,index){results.push(iterator(value,index));});return results;},detect:function(iterator){var result;this.each(function(value,index){if(iterator(value,index)){result=value;throw $break;}});return result;},findAll:function(iterator){var results=[];this.each(function(value,index){if(iterator(value,index))results.push(value);});return results;},grep:function(pattern,iterator){var results=[];this.each(function(value,index){var stringValue=value.toString();if(stringValue.match(pattern))results.push((iterator||Prototype.K)(value,index));})
return results;},include:function(object){var found=false;this.each(function(value){if(value==object){found=true;throw $break;}});return found;},inject:function(memo,iterator){this.each(function(value,index){memo=iterator(memo,value,index);});return memo;},invoke:function(method){var args=$A(arguments).slice(1);return this.collect(function(value){return value[method].apply(value,args);});},max:function(iterator){var result;this.each(function(value,index){value=(iterator||Prototype.K)(value,index);if(value>=(result||value))result=value;});return result;},min:function(iterator){var result;this.each(function(value,index){value=(iterator||Prototype.K)(value,index);if(value<=(result||value))result=value;});return result;},partition:function(iterator){var trues=[],falses=[];this.each(function(value,index){((iterator||Prototype.K)(value,index)?trues:falses).push(value);});return[trues,falses];},pluck:function(property){var results=[];this.each(function(value,index){results.push(value[property]);});return results;},reject:function(iterator){var results=[];this.each(function(value,index){if(!iterator(value,index))results.push(value);});return results;},sortBy:function(iterator){return this.collect(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.collect(Prototype.K);},zip:function(){var iterator=Prototype.K,args=$A(arguments);if(typeof args.last()=='function')iterator=args.pop();var collections=[this].concat(args).map($A);return this.map(function(value,index){iterator(value=collections.pluck(index));return value;});},inspect:function(){return'#<Enumerable:'+this.toArray().inspect()+'>';}}
Object.extend(Enumerable,{map:Enumerable.collect,find:Enumerable.detect,select:Enumerable.findAll,member:Enumerable.include,entries:Enumerable.toArray});var $A=Array.from=function(iterable){if(!iterable)return[];if(iterable.toArray){return iterable.toArray();}else{var results=[];for(var i=0;i<iterable.length;i++)results.push(iterable[i]);return results;}}

Object.extend(Array.prototype, Enumerable);

Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype,{_each:function(iterator){for(var i=0;i<this.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!=undefined||value!=null;});},flatten:function(){return this.inject([],function(array,value){return array.concat(value.constructor==Array?value.flatten():[value]);});},without:function(){var values=$A(arguments);return this.select(function(value){return!values.include(value);});},indexOf:function(object){for(var i=0;i<this.length;i++)if(this[i]==object)return i;return-1;},reverse:function(inline){return(inline!==false?this:this.toArray())._reverse();},shift:function(){var result=this[0];for(var i=0;i<this.length-1;i++)this[i]=this[i+1];this.length--;return result;},inspect:function(){return'['+this.map(Object.inspect).join(', ')+']';}});
var Hash={_each:function(iterator){for(key in this){var value=this[key];if(typeof value=='function')continue;var pair=[key,value];pair.key=key;pair.value=value;iterator(pair);}},keys:function(){return this.pluck('key');},values:function(){return this.pluck('value');},merge:function(hash){return $H(hash).inject($H(this),function(mergedHash,pair){mergedHash[pair.key]=pair.value;return mergedHash;});},toQueryString:function(){return this.map(function(pair){return pair.map(encodeURIComponent).join('=');}).join('&');},inspect:function(){return'#<Hash:{'+this.map(function(pair){return pair.map(Object.inspect).join(': ');}).join(', ')+'}>';}}

function $H(object) {
  var hash = Object.extend({}, object || {});
  Object.extend(hash, Enumerable);
  Object.extend(hash, Hash);
  return hash;
}
ObjectRange = Class.create();
Object.extend(ObjectRange.prototype, Enumerable);
Object.extend(ObjectRange.prototype, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    do {
      iterator(value);
      value = value.succ();
    } while (this.include(value));
  },

  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 ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')},
      function() {return new XMLHttpRequest()}
    ) || false;
  },

  activeRequestCount: 0
}

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responderToAdd) {
    if (!this.include(responderToAdd))
      this.responders.push(responderToAdd);
  },

  unregister: function(responderToRemove) {
    this.responders = this.responders.without(responderToRemove);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (responder[callback] && typeof responder[callback] == 'function') {
        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 = function() {};
Ajax.Base.prototype = {
  setOptions: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      parameters:   ''
    }
    Object.extend(this.options, 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{this.url=url;if(this.options.method=='get'&&parameters.length>0)this.url+=(this.url.match(/\?/)?'&':'?')+parameters;Ajax.Responders.dispatch('onCreate',this,this.transport);this.transport.open(this.options.method,this.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){this.dispatchException(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');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);},header:function(name){try{return this.transport.getResponseHeader(name);}catch(e){}},evalJSON:function(){try{return eval(this.header('X-JSON'));}catch(e){}},evalResponse:function(){try{return eval(this.transport.responseText);}catch(e){this.dispatchException(e);}},

  respondToReadyState: function(readyState) {
    var event = Ajax.Request.Events[readyState];
    var transport = this.transport, json = this.evalJSON();

    if (event == 'Complete') {
      try {
        (this.options['on' + this.transport.status]
         || this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(transport, json);
      } catch (e) {
        this.dispatchException(e);
      }

      if ((this.header('Content-type') || '').match(/^text\/javascript/i))
        this.evalResponse();
    }

    try {
      (this.options['on' + event] || Prototype.emptyFunction)(transport, json);
      Ajax.Responders.dispatch('on' + event, this, transport, json);
    } catch (e) {
      this.dispatchException(e);
    }

    /* Avoid memory leak in MSIE: clean up the oncomplete event handler */
    if (event == 'Complete')
      this.transport.onreadystatechange = Prototype.emptyFunction;
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Updater = Class.create();

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.transport = Ajax.getTransport();
    this.setOptions(options);

    var onComplete = this.options.onComplete || Prototype.emptyFunction;
    this.options.onComplete = (function(transport, object) {
      this.updateContent();
      onComplete(transport, object);
    }).bind(this);

    this.request(url);
  },

  updateContent: function() {
    var receiver = this.responseIsSuccess() ?
      this.containers.success : this.containers.failure;
    var response = this.transport.responseText;

    if (!this.options.evalScripts)
      response = response.stripScripts();

    if (receiver) {
      if (this.options.insertion) {
        new this.options.insertion(receiver, response);
      } else {
        Element.update(receiver, response);
      }
    }

    if (this.responseIsSuccess()) {
      if (this.onComplete)
        setTimeout(this.onComplete.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=(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.onComplete=undefined;clearTimeout(this.timer);(this.onComplete||Prototype.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, parentElement) {
  var children = ($(parentElement) || document.body).getElementsByTagName('*');
  return $A(children).inject([], function(elements, child) {
    if (child.className.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
      elements.push(child);
    return elements;
  });
}

/*--------------------------------------------------------------------------*/

if (!window.Element) {
  var Element = new Object();
}

Object.extend(Element, {
visible:function(element){return $(element).style.display!='none';},toggle:function(){for(var i=0;i<arguments.length;i++){var element=$(arguments[i]);Element[Element.visible(element)?'hide':'show'](element);}},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=$(element);element.parentNode.removeChild(element);},update:function(element,html){$(element).innerHTML=html.stripScripts();setTimeout(function(){html.evalScripts()},10);},getHeight:function(element){element=$(element);return element.offsetHeight;},classNames:function(element){return new Element.ClassNames(element);},hasClassName:function(element,className){if(!(element=$(element)))return;return Element.classNames(element).include(className);},addClassName:function(element,className){if(!(element=$(element)))return;return Element.classNames(element).add(className);},removeClassName:function(element,className){if(!(element=$(element)))return;return Element.classNames(element).remove(className);},cleanWhitespace:function(element){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);}},empty:function(element){return $(element).innerHTML.match(/^\s*$/);},scrollTo:function(element){element=$(element);var x=element.x?element.x:element.offsetLeft,y=element.y?element.y:element.offsetTop;window.scrollTo(x,y);},
getStyle:function(element,style){element=$(element);var value=element.style[style.camelize()];if(!value){if(document.defaultView&&document.defaultView.getComputedStyle){var css=document.defaultView.getComputedStyle(element,null);value=css?css.getPropertyValue(style):null;}else if(element.currentStyle){value=element.currentStyle[style.camelize()];}}if(window.opera&&['left','top','right','bottom'].include(style))if(Element.getStyle(element,'position')=='static')value='auto';return value=='auto'?null:value;},setStyle:function(element,style){element=$(element);for(name in style)element.style[name.camelize()]=style[name];},
getDimensions:function(element){element=$(element);if(Element.getStyle(element,'display')!='none')return{width:element.offsetWidth,height:element.offsetHeight};var els=element.style;var originalVisibility=els.visibility;var originalPosition=els.position;els.visibility='hidden';els.position='absolute';els.display='';var originalWidth=element.clientWidth;var originalHeight=element.clientHeight;els.display='none';els.position=originalPosition;els.visibility=originalVisibility;return{width:originalWidth,height:originalHeight};},makePositioned:function(element){element=$(element);var pos=Element.getStyle(element,'position');if(pos=='static'||!pos){element._madePositioned=true;element.style.position='relative';if(window.opera){element.style.top=0;element.style.left=0;}}},
undoPositioned:function(element){element=$(element);if(element._madePositioned){element._madePositioned=undefined;element.style.position=element.style.top=element.style.left=element.style.bottom=element.style.right='';}},makeClipping:function(element){element=$(element);if(element._overflow)return;element._overflow=element.style.overflow;if((Element.getStyle(element,'overflow')||'visible')!='hidden')element.style.overflow='hidden';},undoClipping:function(element){element=$(element);if(element._overflow)return;element.style.overflow=element._overflow;element._overflow=undefined;}
});
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.stripScripts();if(this.adjacency&&this.element.insertAdjacentHTML){try{this.element.insertAdjacentHTML(this.adjacency,this.content);}catch(e){if(this.element.tagName.toLowerCase()=='tbody'){this.insertContent(this.contentFromAnonymousTable());}else{throw e;}}}else{this.range=this.element.ownerDocument.createRange();if(this.initializeRange)this.initializeRange();this.insertContent([this.range.createContextualFragment(this.content)]);}setTimeout(function(){content.evalScripts()},10);},contentFromAnonymousTable:function(){var div=document.createElement('div');div.innerHTML='<table><tbody>'+this.content+'</tbody></table>';return $A(div.childNodes[0].childNodes[0].childNodes);}
}
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(fragments){fragments.each((function(fragment){this.element.parentNode.insertBefore(fragment,this.element);}).bind(this));}});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(fragments){fragments.reverse(false).each((function(fragment){this.element.insertBefore(fragment,this.element.firstChild);}).bind(this));}});

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(fragments){fragments.each((function(fragment){this.element.appendChild(fragment);}).bind(this));}});Insertion.After=Class.create();Insertion.After.prototype=Object.extend(new Abstract.Insertion('afterEnd'),{initializeRange:function(){this.range.setStartAfter(this.element);},insertContent:function(fragments){fragments.each((function(fragment){this.element.parentNode.insertBefore(fragment,this.element.nextSibling);}).bind(this));}});

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(this.toArray().concat(classNameToAdd).join(' '));},remove:function(classNameToRemove){if(!this.include(classNameToRemove))return;this.set(this.select(function(className){return className!=classNameToRemove;}).join(' '));},toString:function(){return this.toArray().join(' ');}
}

Object.extend(Element.ClassNames.prototype, Enumerable);
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=$(element);element.focus();if(element.select)element.select();}
}
var Form = {
serialize:function(form){var elements=Form.getElements($(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){form=$(form);var elements=new Array();for(tagName in Form.Element.Serializers){var tagElements=form.getElementsByTagName(tagName);for(var j=0;j<tagElements.length;j++)elements.push(tagElements[j]);}return elements;},getInputs:function(form,typeName,name){form=$(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='';}},findFirstElement:function(form){return Form.getElements(form).find(function(element){return element.type!='hidden'&&!element.disabled&&['input','select','textarea'].include(element.tagName.toLowerCase());});},focusFirstElement:function(form){Field.activate(Form.findFirstElement(form));},reset:function(form){$(form).reset();}
}
Form.Element = {
serialize:function(element){element=$(element);var method=element.tagName.toLowerCase();var parameter=Form.Element.Serializers[method](element);if(parameter){var key=encodeURIComponent(parameter[0]);if(key.length==0)return;if(parameter[1].constructor!=Array)parameter[1]=[parameter[1]];return parameter[1].map(function(value){return key+'='+encodeURIComponent(value);}).join('&');}},getValue:function(element){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){return Form.Element.Serializers[element.type=='select-one'?'selectOne':'selectMany'](element);},selectOne:function(element){var value='',opt,index=element.selectedIndex;if(index>=0){opt=element.options[index];value=opt.value;if(!value&&!('value'in opt))value=opt.text;}return[element.name,value];},selectMany:function(element){var value=new Array();for(var i=0;i<element.length;i++){var opt=element.options[i];if(opt.selected){var optValue=opt.value;if(!optValue&&!('value'in opt))optValue=opt.text;value.push(optValue);}}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':Event.observe(element,'click',this.onElementEvent.bind(this));break;case'password':case'text':case'textarea':case'select-one':case'select-multiple':Event.observe(element,'change',this.onElementEvent.bind(this));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;event.cancelBubble=true;}},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=$(element);useCapture=useCapture||false;if(name=='keypress'&&(navigator.appVersion.match(/Konqueror|Safari|KHTML/)||element.attachEvent))name='keydown';this._observeAndCache(element,name,observer,useCapture);},stopObserving:function(element,name,observer,useCapture){var element=$(element);useCapture=useCapture||false;if(name=='keypress'&&(navigator.appVersion.match(/Konqueror|Safari|KHTML/)||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 = {
includeScrollOffsets:false,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];},positionedOffset:function(element){var valueT=0,valueL=0;do{valueT+=element.offsetTop||0;valueL+=element.offsetLeft||0;element=element.offsetParent;if(element){p=Element.getStyle(element,'position');if(p=='relative'||p=='absolute')break;}}while(element);return[valueL,valueT];},offsetParent: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;},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);},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';},page:function(forElement){var valueT=0,valueL=0;var element=forElement;do{valueT+=element.offsetTop||0;valueL+=element.offsetLeft||0;if(element.offsetParent==document.body)if(Element.getStyle(element,'position')=='absolute')break;}while(element=element.offsetParent);element=forElement;do{valueT-=element.scrollTop||0;valueL-=element.scrollLeft||0;}while(element=element.parentNode);return[valueL,valueT];},clone:function(source,target){var options=Object.extend({setLeft:true,setTop:true,setWidth:true,setHeight:true,offsetTop:0,offsetLeft:0},arguments[2]||{})
source=$(source);var p=Position.page(source);target=$(target);var delta=[0,0];var parent=null;if(Element.getStyle(target,'position')=='absolute'){parent=Position.offsetParent(target);delta=Position.page(parent);}if(parent==document.body){delta[0]-=document.body.offsetLeft;delta[1]-=document.body.offsetTop;}if(options.setLeft)target.style.left=(p[0]-delta[0]+options.offsetLeft)+'px';if(options.setTop)target.style.top=(p[1]-delta[1]+options.offsetTop)+'px';if(options.setWidth)target.style.width=source.offsetWidth+'px';if(options.setHeight)target.style.height=source.offsetHeight+'px';},absolutize:function(element){element=$(element);if(element.style.position=='absolute')return;Position.prepare();var offsets=Position.positionedOffset(element);var top=offsets[1];var left=offsets[0];var width=element.clientWidth;var height=element.clientHeight;element._originalLeft=left-parseFloat(element.style.left||0);element._originalTop=top-parseFloat(element.style.top||0);element._originalWidth=element.style.width;element._originalHeight=element.style.height;element.style.position='absolute';element.style.top=top+'px';;element.style.left=left+'px';;element.style.width=width+'px';;element.style.height=height+'px';;},relativize:function(element){element=$(element);if(element.style.position=='relative')return;Position.prepare();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;}
}
if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
  Position.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 [valueL, valueT];
  }
}