var Prototype={Version:"1.5.0",BrowserFeatures:{XPath:!!document.evaluate},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(var property in source){destination[property]=source[property]
}return destination
};
Object.extend(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
}},keys:function(object){var keys=[];
for(var property in object){keys.push(property)
}return keys
},values:function(object){var values=[];
for(var property in object){values.push(object[property])
}return values
},clone:function(object){return Object.extend({},object)
}});
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,args=$A(arguments),object=args.shift();
return function(event){return __method.apply(object,[(event||window.event)].concat(args).concat($A(arguments)))
}
};
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){$R(0,this,true).each(iterator);
return this
}});
var Try={these:function(){var returnValue;
for(var i=0,length=arguments.length;
i<length;
i++){var lambda=arguments[i];
try{returnValue=lambda();
break
}catch(e){}}return returnValue
}};
var PeriodicalExecuter=Class.create();
PeriodicalExecuter.prototype={initialize:function(callback,frequency){this.callback=callback;
this.frequency=frequency;
this.currentlyExecuting=false;
this.registerCallback()
},registerCallback:function(){this.timer=setInterval(this.onTimerEvent.bind(this),this.frequency*1000)
},stop:function(){if(!this.timer){return 
}clearInterval(this.timer);
this.timer=null
},onTimerEvent:function(){if(!this.currentlyExecuting){try{this.currentlyExecuting=true;
this.callback(this)
}finally{this.currentlyExecuting=false
}}}};
String.interpret=function(value){return value==null?"":String(value)
};
Object.extend(String.prototype,{gsub:function(pattern,replacement){var result="",source=this,match;
replacement=arguments.callee.prepareReplacement(replacement);
while(source.length>0){if(match=source.match(pattern)){result+=source.slice(0,match.index);
result+=String.interpret(replacement(match));
source=source.slice(match.index+match[0].length)
}else{result+=source,source=""
}}return result
},sub:function(pattern,replacement,count){replacement=this.gsub.prepareReplacement(replacement);
count=count===undefined?1:count;
return this.gsub(pattern,function(match){if(--count<0){return match[0]
}return replacement(match)
})
},scan:function(pattern,iterator){this.gsub(pattern,iterator);
return this
},truncate:function(length,truncation){length=length||30;
truncation=truncation===undefined?"...":truncation;
return this.length>length?this.slice(0,length-truncation.length)+truncation:this
},strip:function(){return this.replace(/^\s+/,"").replace(/\s+$/,"")
},stripTags:function(){return this.replace(/<\/?[^>]+>/gi,"")
},stripScripts:function(){return this.replace(new RegExp(Prototype.ScriptFragment,"img"),"")
},extractScripts:function(){var matchAll=new RegExp(Prototype.ScriptFragment,"img");
var matchOne=new RegExp(Prototype.ScriptFragment,"im");
return(this.match(matchAll)||[]).map(function(scriptTag){return(scriptTag.match(matchOne)||["",""])[1]
})
},evalScripts:function(){return this.extractScripts().map(function(script){return eval(script)
})
},escapeHTML:function(){var 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.length>1?$A(div.childNodes).inject("",function(memo,node){return memo+node.nodeValue
}):div.childNodes[0].nodeValue):""
},toQueryParams:function(separator){var match=this.strip().match(/([^?#]*)(#.*)?$/);
if(!match){return{}
}return match[1].split(separator||"&").inject({},function(hash,pair){if((pair=pair.split("="))[0]){var name=decodeURIComponent(pair[0]);
var value=pair[1]?decodeURIComponent(pair[1]):undefined;
if(hash[name]!==undefined){if(hash[name].constructor!=Array){hash[name]=[hash[name]]
}if(value){hash[name].push(value)
}}else{hash[name]=value
}}return hash
})
},toArray:function(){return this.split("")
},succ:function(){return this.slice(0,this.length-1)+String.fromCharCode(this.charCodeAt(this.length-1)+1)
},camelize:function(){var parts=this.split("-"),len=parts.length;
if(len==1){return parts[0]
}var camelized=this.charAt(0)=="-"?parts[0].charAt(0).toUpperCase()+parts[0].substring(1):parts[0];
for(var i=1;
i<len;
i++){camelized+=parts[i].charAt(0).toUpperCase()+parts[i].substring(1)
}return camelized
},capitalize:function(){return this.charAt(0).toUpperCase()+this.substring(1).toLowerCase()
},underscore:function(){return this.gsub(/::/,"/").gsub(/([A-Z]+)([A-Z][a-z])/,"#{1}_#{2}").gsub(/([a-z\d])([A-Z])/,"#{1}_#{2}").gsub(/-/,"_").toLowerCase()
},dasherize:function(){return this.gsub(/_/,"-")
},inspect:function(useDoubleQuotes){var escapedString=this.replace(/\\/g,"\\\\");
if(useDoubleQuotes){return'"'+escapedString.replace(/"/g,'\\"')+'"'
}else{return"'"+escapedString.replace(/'/g,"\\'")+"'"
}}});
String.prototype.gsub.prepareReplacement=function(replacement){if(typeof replacement=="function"){return replacement
}var template=new Template(replacement);
return function(match){return template.evaluate(match)
}
};
String.prototype.parseQuery=String.prototype.toQueryParams;
var Template=Class.create();
Template.Pattern=/(^|.|\r|\n)(#\{(.*?)\})/;
Template.prototype={initialize:function(template,pattern){this.template=template.toString();
this.pattern=pattern||Template.Pattern
},evaluate:function(object){return this.template.gsub(this.pattern,function(match){var before=match[1];
if(before=="\\"){return match[2]
}return before+String.interpret(object[match[3]])
})
}};
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
}}return this
},eachSlice:function(number,iterator){var index=-number,slices=[],array=this.toArray();
while((index+=number)<array.length){slices.push(array.slice(index,index+number))
}return slices.map(iterator)
},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=false;
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||Prototype.K)(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 $break
}});
return found
},inGroupsOf:function(number,fillWith){fillWith=fillWith===undefined?null:fillWith;
return this.eachSlice(number,function(slice){while(slice.length<number){slice.push(fillWith)
}return slice
})
},inject:function(memo,iterator){this.each(function(value,index){memo=iterator(memo,value,index)
});
return memo
},invoke:function(method){var args=$A(arguments).slice(1);
return this.map(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(result==undefined||value>=result){result=value
}});
return result
},min:function(iterator){var result;
this.each(function(value,index){value=(iterator||Prototype.K)(value,index);
if(result==undefined||value<result){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.map(function(value,index){return{value:value,criteria:iterator(value,index)}
}).sort(function(left,right){var a=left.criteria,b=right.criteria;
return a<b?-1:a>b?1:0
}).pluck("value")
},toArray:function(){return this.map()
},zip:function(){var iterator=Prototype.K,args=$A(arguments);
if(typeof args.last()=="function"){iterator=args.pop()
}var collections=[this].concat(args).map($A);
return this.map(function(value,index){return iterator(collections.pluck(index))
})
},size:function(){return this.toArray().length
},inspect:function(){return"#<Enumerable:"+this.toArray().inspect()+">"
}};
Object.extend(Enumerable,{map:Enumerable.collect,find:Enumerable.detect,select:Enumerable.findAll,member:Enumerable.include,entries:Enumerable.toArray});
var $A=Array.from=function(iterable){if(!iterable){return[]
}if(iterable.toArray){return iterable.toArray()
}else{var results=[];
for(var i=0,length=iterable.length;
i<length;
i++){results.push(iterable[i])
}return results
}};
Object.extend(Array.prototype,Enumerable);
if(!Array.prototype._reverse){Array.prototype._reverse=Array.prototype.reverse
}Object.extend(Array.prototype,{_each:function(iterator){for(var i=0,length=this.length;
i<length;
i++){iterator(this[i])
}},clear:function(){this.length=0;
return this
},first:function(){return this[0]
},last:function(){return this[this.length-1]
},compact:function(){return this.select(function(value){return value!=null
})
},flatten:function(){return this.inject([],function(array,value){return array.concat(value&&value.constructor==Array?value.flatten():[value])
})
},without:function(){var values=$A(arguments);
return this.select(function(value){return !values.include(value)
})
},indexOf:function(object){for(var i=0,length=this.length;
i<length;
i++){if(this[i]==object){return i
}}return -1
},reverse:function(inline){return(inline!==false?this:this.toArray())._reverse()
},reduce:function(){return this.length>1?this:this[0]
},uniq:function(){return this.inject([],function(array,value){return array.include(value)?array:array.concat([value])
})
},clone:function(){return[].concat(this)
},size:function(){return this.length
},inspect:function(){return"["+this.map(Object.inspect).join(", ")+"]"
}});
Array.prototype.toArray=Array.prototype.clone;
function $w(string){string=string.strip();
return string?string.split(/\s+/):[]
}if(window.opera){Array.prototype.concat=function(){var array=[];
for(var i=0,length=this.length;
i<length;
i++){array.push(this[i])
}for(var i=0,length=arguments.length;
i<length;
i++){if(arguments[i].constructor==Array){for(var j=0,arrayLength=arguments[i].length;
j<arrayLength;
j++){array.push(arguments[i][j])
}}else{array.push(arguments[i])
}}return array
}
}var Hash=function(obj){Object.extend(this,obj||{})
};
Object.extend(Hash,{toQueryString:function(obj){var parts=[];
this.prototype._each.call(obj,function(pair){if(!pair.key){return 
}if(pair.value&&pair.value.constructor==Array){var values=pair.value.compact();
if(values.length<2){pair.value=values.reduce()
}else{key=encodeURIComponent(pair.key);
values.each(function(value){value=value!=undefined?encodeURIComponent(value):"";
parts.push(key+"="+encodeURIComponent(value))
});
return 
}}if(pair.value==undefined){pair[1]=""
}parts.push(pair.map(encodeURIComponent).join("="))
});
return parts.join("&")
}});
Object.extend(Hash.prototype,Enumerable);
Object.extend(Hash.prototype,{_each:function(iterator){for(var key in this){var value=this[key];
if(value&&value==Hash.prototype[key]){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(this,function(mergedHash,pair){mergedHash[pair.key]=pair.value;
return mergedHash
})
},remove:function(){var result;
for(var i=0,length=arguments.length;
i<length;
i++){var value=this[arguments[i]];
if(value!==undefined){if(result===undefined){result=value
}else{if(result.constructor!=Array){result=[result]
}result.push(value)
}}delete this[arguments[i]]
}return result
},toQueryString:function(){return Hash.toQueryString(this)
},inspect:function(){return"#<Hash:{"+this.map(function(pair){return pair.map(Object.inspect).join(": ")
}).join(", ")+"}>"
}});
function $H(object){if(object&&object.constructor==Hash){return object
}return new Hash(object)
}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;
while(this.include(value)){iterator(value);
value=value.succ()
}},include:function(value){if(value<this.start){return false
}if(this.exclusive){return value<this.end
}return value<=this.end
}});
var $R=function(start,end,exclusive){return new ObjectRange(start,end,exclusive)
};
var Ajax={getTransport:function(){return Try.these(function(){return new XMLHttpRequest()
},function(){return new ActiveXObject("Msxml2.XMLHTTP")
},function(){return new ActiveXObject("Microsoft.XMLHTTP")
})||false
},activeRequestCount:0};
Ajax.Responders={responders:[],_each:function(iterator){this.responders._each(iterator)
},register:function(responder){if(!this.include(responder)){this.responders.push(responder)
}},unregister:function(responder){this.responders=this.responders.without(responder)
},dispatch:function(callback,request,transport,json){this.each(function(responder){if(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,contentType:"application/x-www-form-urlencoded",encoding:"UTF-8",parameters:""};
Object.extend(this.options,options||{});
this.options.method=this.options.method.toLowerCase();
if(typeof this.options.parameters=="string"){this.options.parameters=this.options.parameters.toQueryParams()
}}};
Ajax.Request=Class.create();
Ajax.Request.Events=["Uninitialized","Loading","Loaded","Interactive","Complete"];
Ajax.Request.prototype=Object.extend(new Ajax.Base(),{_complete:false,initialize:function(url,options){this.transport=Ajax.getTransport();
this.setOptions(options);
this.request(url)
},request:function(url){this.url=url;
this.method=this.options.method;
var params=this.options.parameters;
if(!["get","post"].include(this.method)){params["_method"]=this.method;
this.method="post"
}params=Hash.toQueryString(params);
if(params&&/Konqueror|Safari|KHTML/.test(navigator.userAgent)){params+="&_="
}if(this.method=="get"&&params){this.url+=(this.url.indexOf("?")>-1?"&":"?")+params
}try{Ajax.Responders.dispatch("onCreate",this,this.transport);
this.transport.open(this.method.toUpperCase(),this.url,this.options.asynchronous);
if(this.options.asynchronous){setTimeout(function(){this.respondToReadyState(1)
}.bind(this),10)
}this.transport.onreadystatechange=this.onStateChange.bind(this);
this.setRequestHeaders();
var body=this.method=="post"?(this.options.postBody||params):null;
this.transport.send(body);
if(!this.options.asynchronous&&this.transport.overrideMimeType){this.onStateChange()
}}catch(e){this.dispatchException(e)
}},onStateChange:function(){var readyState=this.transport.readyState;
if(readyState>1&&!((readyState==4)&&this._complete)){this.respondToReadyState(this.transport.readyState)
}},setRequestHeaders:function(){var headers={"X-Requested-With":"XMLHttpRequest","X-Prototype-Version":Prototype.Version,"Accept":"text/javascript, text/html, application/xml, text/xml, */*"};
if(this.method=="post"){headers["Content-type"]=this.options.contentType+(this.options.encoding?"; charset="+this.options.encoding:"");
if(this.transport.overrideMimeType&&(navigator.userAgent.match(/Gecko\/(\d{4})/)||[0,2005])[1]<2005){headers["Connection"]="close"
}}if(typeof this.options.requestHeaders=="object"){var extras=this.options.requestHeaders;
if(typeof extras.push=="function"){for(var i=0,length=extras.length;
i<length;
i+=2){headers[extras[i]]=extras[i+1]
}}else{$H(extras).each(function(pair){headers[pair.key]=pair.value
})
}}for(var name in headers){this.transport.setRequestHeader(name,headers[name])
}},success:function(){return !this.transport.status||(this.transport.status>=200&&this.transport.status<300)
},respondToReadyState:function(readyState){var state=Ajax.Request.Events[readyState];
var transport=this.transport,json=this.evalJSON();
if(state=="Complete"){try{this._complete=true;
(this.options["on"+this.transport.status]||this.options["on"+(this.success()?"Success":"Failure")]||Prototype.emptyFunction)(transport,json)
}catch(e){this.dispatchException(e)
}if((this.getHeader("Content-type")||"text/javascript").strip().match(/^(text|application)\/(x-)?(java|ecma)script(;.*)?$/i)){this.evalResponse()
}}try{(this.options["on"+state]||Prototype.emptyFunction)(transport,json);
Ajax.Responders.dispatch("on"+state,this,transport,json)
}catch(e){this.dispatchException(e)
}if(state=="Complete"){this.transport.onreadystatechange=Prototype.emptyFunction
}},getHeader:function(name){try{return this.transport.getResponseHeader(name)
}catch(e){return null
}},evalJSON:function(){try{var json=this.getHeader("X-JSON");
return json?eval("("+json+")"):null
}catch(e){return null
}},evalResponse:function(){try{return eval(this.transport.responseText)
}catch(e){this.dispatchException(e)
}},dispatchException:function(exception){(this.options.onException||Prototype.emptyFunction)(this,exception);
Ajax.Responders.dispatch("onException",this,exception)
}});
Ajax.Updater=Class.create();
Object.extend(Object.extend(Ajax.Updater.prototype,Ajax.Request.prototype),{initialize:function(container,url,options){this.container={success:(container.success||container),failure:(container.failure||(container.success?null:container))};
this.transport=Ajax.getTransport();
this.setOptions(options);
var onComplete=this.options.onComplete||Prototype.emptyFunction;
this.options.onComplete=(function(transport,param){this.updateContent();
onComplete(transport,param)
}).bind(this);
this.request(url)
},updateContent:function(){var receiver=this.container[this.success()?"success":"failure"];
var response=this.transport.responseText;
if(!this.options.evalScripts){response=response.stripScripts()
}if(receiver=$(receiver)){if(this.options.insertion){new this.options.insertion(receiver,response)
}else{receiver.update(response)
}}if(this.success()){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.options.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)
}});
function $(element){if(arguments.length>1){for(var i=0,elements=[],length=arguments.length;
i<length;
i++){elements.push($(arguments[i]))
}return elements
}if(typeof element=="string"){element=document.getElementById(element)
}return Element.extend(element)
}if(Prototype.BrowserFeatures.XPath){document._getElementsByXPath=function(expression,parentElement){var results=[];
var query=document.evaluate(expression,$(parentElement)||document,null,XPathResult.ORDERED_NODE_SNAPSHOT_TYPE,null);
for(var i=0,length=query.snapshotLength;
i<length;
i++){results.push(query.snapshotItem(i))
}return results
}
}document.getElementsByClassName=function(className,parentElement){if(Prototype.BrowserFeatures.XPath){var q=".//*[contains(concat(' ', @class, ' '), ' "+className+" ')]";
return document._getElementsByXPath(q,parentElement)
}else{var children=($(parentElement)||document.body).getElementsByTagName("*");
var elements=[],child;
for(var i=0,length=children.length;
i<length;
i++){child=children[i];
if(Element.hasClassName(child,className)){elements.push(Element.extend(child))
}}return elements
}};
if(!window.Element){var Element=new Object()
}Element.extend=function(element){if(!element||_nativeExtensions||element.nodeType==3){return element
}if(!element._extended&&element.tagName&&element!=window){var methods=Object.clone(Element.Methods),cache=Element.extend.cache;
if(element.tagName=="FORM"){Object.extend(methods,Form.Methods)
}if(["INPUT","TEXTAREA","SELECT"].include(element.tagName)){Object.extend(methods,Form.Element.Methods)
}Object.extend(methods,Element.Methods.Simulated);
for(var property in methods){var value=methods[property];
if(typeof value=="function"&&!(property in element)){element[property]=cache.findOrStore(value)
}}}element._extended=true;
return element
};
Element.extend.cache={findOrStore:function(value){return this[value]=this[value]||function(){return value.apply(null,[this].concat($A(arguments)))
}
}};
Element.Methods={visible:function(element){return $(element).style.display!="none"
},toggle:function(element){element=$(element);
Element[Element.visible(element)?"hide":"show"](element);
return element
},hide:function(element){$(element).style.display="none";
return element
},show:function(element){$(element).style.display="";
return element
},remove:function(element){element=$(element);
element.parentNode.removeChild(element);
return element
},update:function(element,html){html=typeof html=="undefined"?"":html.toString();
$(element).innerHTML=html.stripScripts();
setTimeout(function(){html.evalScripts()
},10);
return element
},replace:function(element,html){element=$(element);
html=typeof html=="undefined"?"":html.toString();
if(element.outerHTML){element.outerHTML=html.stripScripts()
}else{var range=element.ownerDocument.createRange();
range.selectNodeContents(element);
element.parentNode.replaceChild(range.createContextualFragment(html.stripScripts()),element)
}setTimeout(function(){html.evalScripts()
},10);
return element
},inspect:function(element){element=$(element);
var result="<"+element.tagName.toLowerCase();
$H({"id":"id","className":"class"}).each(function(pair){var property=pair.first(),attribute=pair.last();
var value=(element[property]||"").toString();
if(value){result+=" "+attribute+"="+value.inspect(true)
}});
return result+">"
},recursivelyCollect:function(element,property){element=$(element);
var elements=[];
while(element=element[property]){if(element.nodeType==1){elements.push(Element.extend(element))
}}return elements
},ancestors:function(element){return $(element).recursivelyCollect("parentNode")
},descendants:function(element){return $A($(element).getElementsByTagName("*"))
},immediateDescendants:function(element){if(!(element=$(element).firstChild)){return[]
}while(element&&element.nodeType!=1){element=element.nextSibling
}if(element){return[element].concat($(element).nextSiblings())
}return[]
},previousSiblings:function(element){return $(element).recursivelyCollect("previousSibling")
},nextSiblings:function(element){return $(element).recursivelyCollect("nextSibling")
},siblings:function(element){element=$(element);
return element.previousSiblings().reverse().concat(element.nextSiblings())
},match:function(element,selector){if(typeof selector=="string"){selector=new Selector(selector)
}return selector.match($(element))
},up:function(element,expression,index){return Selector.findElement($(element).ancestors(),expression,index)
},down:function(element,expression,index){return Selector.findElement($(element).descendants(),expression,index)
},previous:function(element,expression,index){return Selector.findElement($(element).previousSiblings(),expression,index)
},next:function(element,expression,index){return Selector.findElement($(element).nextSiblings(),expression,index)
},getElementsBySelector:function(){var args=$A(arguments),element=$(args.shift());
return Selector.findChildElements(element,args)
},getElementsByClassName:function(element,className){return document.getElementsByClassName(className,element)
},readAttribute:function(element,name){element=$(element);
if(document.all&&!window.opera){var t=Element._attributeTranslations;
if(t.values[name]){return t.values[name](element,name)
}if(t.names[name]){name=t.names[name]
}var attribute=element.attributes[name];
if(attribute){return attribute.nodeValue
}}return element.getAttribute(name)
},getHeight:function(element){return $(element).getDimensions().height
},getWidth:function(element){return $(element).getDimensions().width
},classNames:function(element){return new Element.ClassNames(element)
},hasClassName:function(element,className){if(!(element=$(element))){return 
}var elementClassName=element.className;
if(elementClassName.length==0){return false
}if(elementClassName==className||elementClassName.match(new RegExp("(^|\\s)"+className+"(\\s|$)"))){return true
}return false
},addClassName:function(element,className){if(!(element=$(element))){return 
}Element.classNames(element).add(className);
return element
},removeClassName:function(element,className){if(!(element=$(element))){return 
}Element.classNames(element).remove(className);
return element
},toggleClassName:function(element,className){if(!(element=$(element))){return 
}Element.classNames(element)[element.hasClassName(className)?"remove":"add"](className);
return element
},observe:function(){Event.observe.apply(Event,arguments);
return $A(arguments).first()
},stopObserving:function(){Event.stopObserving.apply(Event,arguments);
return $A(arguments).first()
},cleanWhitespace:function(element){element=$(element);
var node=element.firstChild;
while(node){var nextNode=node.nextSibling;
if(node.nodeType==3&&!/\S/.test(node.nodeValue)){element.removeChild(node)
}node=nextNode
}return element
},empty:function(element){return $(element).innerHTML.match(/^\s*$/)
},descendantOf:function(element,ancestor){element=$(element),ancestor=$(ancestor);
while(element=element.parentNode){if(element==ancestor){return true
}}return false
},scrollTo:function(element){element=$(element);
var pos=Position.cumulativeOffset(element);
window.scrollTo(pos[0],pos[1]);
return element
},getStyle:function(element,style){element=$(element);
if(["float","cssFloat"].include(style)){style=(typeof element.style.styleFloat!="undefined"?"styleFloat":"cssFloat")
}style=style.camelize();
var value=element.style[style];
if(!value){if(document.defaultView&&document.defaultView.getComputedStyle){var css=document.defaultView.getComputedStyle(element,null);
value=css?css[style]:null
}else{if(element.currentStyle){value=element.currentStyle[style]
}}}if((value=="auto")&&["width","height"].include(style)&&(element.getStyle("display")!="none")){value=element["offset"+style.capitalize()]+"px"
}if(window.opera&&["left","top","right","bottom"].include(style)){if(Element.getStyle(element,"position")=="static"){value="auto"
}}if(style=="opacity"){if(value){return parseFloat(value)
}if(value=(element.getStyle("filter")||"").match(/alpha\(opacity=(.*)\)/)){if(value[1]){return parseFloat(value[1])/100
}}return 1
}return value=="auto"?null:value
},setStyle:function(element,style){element=$(element);
for(var name in style){var value=style[name];
if(name=="opacity"){if(value==1){value=(/Gecko/.test(navigator.userAgent)&&!/Konqueror|Safari|KHTML/.test(navigator.userAgent))?0.999999:1;
if(/MSIE/.test(navigator.userAgent)&&!window.opera){element.style.filter=element.getStyle("filter").replace(/alpha\([^\)]*\)/gi,"")
}}else{if(value===""){if(/MSIE/.test(navigator.userAgent)&&!window.opera){element.style.filter=element.getStyle("filter").replace(/alpha\([^\)]*\)/gi,"")
}}else{if(value<0.00001){value=0
}if(/MSIE/.test(navigator.userAgent)&&!window.opera){element.style.filter=element.getStyle("filter").replace(/alpha\([^\)]*\)/gi,"")+"alpha(opacity="+value*100+")"
}}}}else{if(["float","cssFloat"].include(name)){name=(typeof element.style.styleFloat!="undefined")?"styleFloat":"cssFloat"
}}element.style[name.camelize()]=value
}return element
},getDimensions:function(element){element=$(element);
var display=$(element).getStyle("display");
if(display!="none"&&display!=null){return{width:element.offsetWidth,height:element.offsetHeight}
}var els=element.style;
var originalVisibility=els.visibility;
var originalPosition=els.position;
var originalDisplay=els.display;
els.visibility="hidden";
els.position="absolute";
els.display="block";
var originalWidth=element.clientWidth;
var originalHeight=element.clientHeight;
els.display=originalDisplay;
els.position=originalPosition;
els.visibility=originalVisibility;
return{width:originalWidth,height:originalHeight}
},makePositioned:function(element){element=$(element);
var pos=Element.getStyle(element,"position");
if(pos=="static"||!pos){element._madePositioned=true;
element.style.position="relative";
if(window.opera){element.style.top=0;
element.style.left=0
}}return element
},undoPositioned:function(element){element=$(element);
if(element._madePositioned){element._madePositioned=undefined;
element.style.position=element.style.top=element.style.left=element.style.bottom=element.style.right=""
}return element
},makeClipping:function(element){element=$(element);
if(element._overflow){return element
}element._overflow=element.style.overflow||"auto";
if((Element.getStyle(element,"overflow")||"visible")!="hidden"){element.style.overflow="hidden"
}return element
},undoClipping:function(element){element=$(element);
if(!element._overflow){return element
}element.style.overflow=element._overflow=="auto"?"":element._overflow;
element._overflow=null;
return element
}};
Object.extend(Element.Methods,{childOf:Element.Methods.descendantOf});
Element._attributeTranslations={};
Element._attributeTranslations.names={colspan:"colSpan",rowspan:"rowSpan",valign:"vAlign",datetime:"dateTime",accesskey:"accessKey",tabindex:"tabIndex",enctype:"encType",maxlength:"maxLength",readonly:"readOnly",longdesc:"longDesc"};
Element._attributeTranslations.values={_getAttr:function(element,attribute){return element.getAttribute(attribute,2)
},_flag:function(element,attribute){return $(element).hasAttribute(attribute)?attribute:null
},style:function(element){return element.style.cssText.toLowerCase()
},title:function(element){var node=element.getAttributeNode("title");
return node.specified?node.nodeValue:null
}};
Object.extend(Element._attributeTranslations.values,{href:Element._attributeTranslations.values._getAttr,src:Element._attributeTranslations.values._getAttr,disabled:Element._attributeTranslations.values._flag,checked:Element._attributeTranslations.values._flag,readonly:Element._attributeTranslations.values._flag,multiple:Element._attributeTranslations.values._flag});
Element.Methods.Simulated={hasAttribute:function(element,attribute){var t=Element._attributeTranslations;
attribute=t.names[attribute]||attribute;
return $(element).getAttributeNode(attribute).specified
}};
if(document.all&&!window.opera){Element.Methods.update=function(element,html){element=$(element);
html=typeof html=="undefined"?"":html.toString();
var tagName=element.tagName.toUpperCase();
if(["THEAD","TBODY","TR","TD"].include(tagName)){var div=document.createElement("div");
switch(tagName){case"THEAD":case"TBODY":div.innerHTML="<table><tbody>"+html.stripScripts()+"</tbody></table>";
depth=2;
break;
case"TR":div.innerHTML="<table><tbody><tr>"+html.stripScripts()+"</tr></tbody></table>";
depth=3;
break;
case"TD":div.innerHTML="<table><tbody><tr><td>"+html.stripScripts()+"</td></tr></tbody></table>";
depth=4
}$A(element.childNodes).each(function(node){element.removeChild(node)
});
depth.times(function(){div=div.firstChild
});
$A(div.childNodes).each(function(node){element.appendChild(node)
})
}else{element.innerHTML=html.stripScripts()
}setTimeout(function(){html.evalScripts()
},10);
return element
}
}Object.extend(Element,Element.Methods);
var _nativeExtensions=false;
if(/Konqueror|Safari|KHTML/.test(navigator.userAgent)){["","Form","Input","TextArea","Select"].each(function(tag){var className="HTML"+tag+"Element";
if(window[className]){return 
}var klass=window[className]={};
klass.prototype=document.createElement(tag?tag.toLowerCase():"div").__proto__
})
}Element.addMethods=function(methods){Object.extend(Element.Methods,methods||{});
function copy(methods,destination,onlyIfAbsent){onlyIfAbsent=onlyIfAbsent||false;
var cache=Element.extend.cache;
for(var property in methods){var value=methods[property];
if(!onlyIfAbsent||!(property in destination)){destination[property]=cache.findOrStore(value)
}}}if(typeof HTMLElement!="undefined"){copy(Element.Methods,HTMLElement.prototype);
copy(Element.Methods.Simulated,HTMLElement.prototype,true);
copy(Form.Methods,HTMLFormElement.prototype);
[HTMLInputElement,HTMLTextAreaElement,HTMLSelectElement].each(function(klass){copy(Form.Element.Methods,klass.prototype)
});
_nativeExtensions=true
}};
var Toggle=new Object();
Toggle.display=Element.toggle;
Abstract.Insertion=function(adjacency){this.adjacency=adjacency
};
Abstract.Insertion.prototype={initialize:function(element,content){this.element=$(element);
this.content=content.stripScripts();
if(this.adjacency&&this.element.insertAdjacentHTML){try{this.element.insertAdjacentHTML(this.adjacency,this.content)
}catch(e){var tagName=this.element.tagName.toUpperCase();
if(["TBODY","TR"].include(tagName)){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($A(this).concat(classNameToAdd).join(" "))
},remove:function(classNameToRemove){if(!this.include(classNameToRemove)){return 
}this.set($A(this).without(classNameToRemove).join(" "))
},toString:function(){return $A(this).join(" ")
}};
Object.extend(Element.ClassNames.prototype,Enumerable);
var Selector=Class.create();
Selector.prototype={initialize:function(expression){this.params={classNames:[]};
this.expression=expression.toString().strip();
this.parseExpression();
this.compileMatcher()
},parseExpression:function(){function abort(message){throw"Parse error in selector: "+message
}if(this.expression==""){abort("empty expression")
}var params=this.params,expr=this.expression,match,modifier,clause,rest;
while(match=expr.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)){params.attributes=params.attributes||[];
params.attributes.push({name:match[2],operator:match[3],value:match[4]||match[5]||""});
expr=match[1]
}if(expr=="*"){return this.params.wildcard=true
}while(match=expr.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)){modifier=match[1],clause=match[2],rest=match[3];
switch(modifier){case"#":params.id=clause;
break;
case".":params.classNames.push(clause);
break;
case"":case undefined:params.tagName=clause.toUpperCase();
break;
default:abort(expr.inspect())
}expr=rest
}if(expr.length>0){abort(expr.inspect())
}},buildMatchExpression:function(){var params=this.params,conditions=[],clause;
if(params.wildcard){conditions.push("true")
}if(clause=params.id){conditions.push('element.readAttribute("id") == '+clause.inspect())
}if(clause=params.tagName){conditions.push("element.tagName.toUpperCase() == "+clause.inspect())
}if((clause=params.classNames).length>0){for(var i=0,length=clause.length;
i<length;
i++){conditions.push("element.hasClassName("+clause[i].inspect()+")")
}}if(clause=params.attributes){clause.each(function(attribute){var value="element.readAttribute("+attribute.name.inspect()+")";
var splitValueBy=function(delimiter){return value+" && "+value+".split("+delimiter.inspect()+")"
};
switch(attribute.operator){case"=":conditions.push(value+" == "+attribute.value.inspect());
break;
case"~=":conditions.push(splitValueBy(" ")+".include("+attribute.value.inspect()+")");
break;
case"|=":conditions.push(splitValueBy("-")+".first().toUpperCase() == "+attribute.value.toUpperCase().inspect());
break;
case"!=":conditions.push(value+" != "+attribute.value.inspect());
break;
case"":case undefined:conditions.push("element.hasAttribute("+attribute.name.inspect()+")");
break;
default:throw"Unknown operator "+attribute.operator+" in selector"
}})
}return conditions.join(" && ")
},compileMatcher:function(){this.match=new Function("element","if (!element.tagName) return false;       element = $(element);       return "+this.buildMatchExpression())
},findElements:function(scope){var element;
if(element=$(this.params.id)){if(this.match(element)){if(!scope||Element.childOf(element,scope)){return[element]
}}}scope=(scope||document).getElementsByTagName(this.params.tagName||"*");
var results=[];
for(var i=0,length=scope.length;
i<length;
i++){if(this.match(element=scope[i])){results.push(Element.extend(element))
}}return results
},toString:function(){return this.expression
}};
Object.extend(Selector,{matchElements:function(elements,expression){var selector=new Selector(expression);
return elements.select(selector.match.bind(selector)).map(Element.extend)
},findElement:function(elements,expression,index){if(typeof expression=="number"){index=expression,expression=false
}return Selector.matchElements(elements,expression||"*")[index||0]
},findChildElements:function(element,expressions){return expressions.map(function(expression){return expression.match(/[^\s"]+(?:"[^"]*"[^\s"]+)*/g).inject([null],function(results,expr){var selector=new Selector(expr);
return results.inject([],function(elements,result){return elements.concat(selector.findElements(result||element))
})
})
}).flatten()
}});
function $$(){return Selector.findChildElements(document,$A(arguments))
}var Form={reset:function(form){$(form).reset();
return form
},serializeElements:function(elements,getHash){var data=elements.inject({},function(result,element){if(!element.disabled&&element.name){var key=element.name,value=$(element).getValue();
if(value!=undefined){if(result[key]){if(result[key].constructor!=Array){result[key]=[result[key]]
}result[key].push(value)
}else{result[key]=value
}}}return result
});
return getHash?data:Hash.toQueryString(data)
}};
Form.Methods={serialize:function(form,getHash){return Form.serializeElements(Form.getElements(form),getHash)
},getElements:function(form){return $A($(form).getElementsByTagName("*")).inject([],function(elements,child){if(Form.Element.Serializers[child.tagName.toLowerCase()]){elements.push(Element.extend(child))
}return elements
})
},getInputs:function(form,typeName,name){form=$(form);
var inputs=form.getElementsByTagName("input");
if(!typeName&&!name){return $A(inputs).map(Element.extend)
}for(var i=0,matchingInputs=[],length=inputs.length;
i<length;
i++){var input=inputs[i];
if((typeName&&input.type!=typeName)||(name&&input.name!=name)){continue
}matchingInputs.push(Element.extend(input))
}return matchingInputs
},disable:function(form){form=$(form);
form.getElements().each(function(element){element.blur();
element.disabled="true"
});
return form
},enable:function(form){form=$(form);
form.getElements().each(function(element){element.disabled=""
});
return form
},findFirstElement:function(form){return $(form).getElements().find(function(element){return element.type!="hidden"&&!element.disabled&&["input","select","textarea"].include(element.tagName.toLowerCase())
})
},focusFirstElement:function(form){form=$(form);
form.findFirstElement().activate();
return form
}};
Object.extend(Form,Form.Methods);
Form.Element={focus:function(element){$(element).focus();
return element
},select:function(element){$(element).select();
return element
}};
Form.Element.Methods={serialize:function(element){element=$(element);
if(!element.disabled&&element.name){var value=element.getValue();
if(value!=undefined){var pair={};
pair[element.name]=value;
return Hash.toQueryString(pair)
}}return""
},getValue:function(element){element=$(element);
var method=element.tagName.toLowerCase();
return Form.Element.Serializers[method](element)
},clear:function(element){$(element).value="";
return element
},present:function(element){return $(element).value!=""
},activate:function(element){element=$(element);
element.focus();
if(element.select&&(element.tagName.toLowerCase()!="input"||!["button","reset","submit"].include(element.type))){element.select()
}return element
},disable:function(element){element=$(element);
element.disabled=true;
return element
},enable:function(element){element=$(element);
element.blur();
element.disabled=false;
return element
}};
Object.extend(Form.Element,Form.Element.Methods);
var Field=Form.Element;
var $F=Form.Element.getValue;
Form.Element.Serializers={input:function(element){switch(element.type.toLowerCase()){case"checkbox":case"radio":return Form.Element.Serializers.inputSelector(element);
default:return Form.Element.Serializers.textarea(element)
}},inputSelector:function(element){return element.checked?element.value:null
},textarea:function(element){return element.value
},select:function(element){return this[element.type=="select-one"?"selectOne":"selectMany"](element)
},selectOne:function(element){var index=element.selectedIndex;
return index>=0?this.optionValue(element.options[index]):null
},selectMany:function(element){var values,length=element.length;
if(!length){return null
}for(var i=0,values=[];
i<length;
i++){var opt=element.options[i];
if(opt.selected){values.push(this.optionValue(opt))
}}return values
},optionValue:function(opt){return Element.extend(opt).hasAttribute("value")?opt.value:opt.text
}};
Abstract.TimedObserver=function(){};
Abstract.TimedObserver.prototype={initialize:function(element,frequency,callback){this.frequency=frequency;
this.element=$(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();
var changed=("string"==typeof this.lastValue&&"string"==typeof value?this.lastValue!=value:String(this.lastValue)!=String(value));
if(changed){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(){Form.getElements(this.element).each(this.registerCallback.bind(this))
},registerCallback:function(element){if(element.type){switch(element.type.toLowerCase()){case"checkbox":case"radio":Event.observe(element,"click",this.onElementEvent.bind(this));
break;
default:Event.observe(element,"change",this.onElementEvent.bind(this));
break
}}}};
Form.Element.EventObserver=Class.create();
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,KEY_HOME:36,KEY_END:35,KEY_PAGEUP:33,KEY_PAGEDOWN:34,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,length=Event.observers.length;
i<length;
i++){Event.stopObserving.apply(this,Event.observers[i]);
Event.observers[i][0]=null
}Event.observers=false
},observe:function(element,name,observer,useCapture){element=$(element);
useCapture=useCapture||false;
if(name=="keypress"&&(navigator.appVersion.match(/Konqueror|Safari|KHTML/)||element.attachEvent)){name="keydown"
}Event._observeAndCache(element,name,observer,useCapture)
},stopObserving:function(element,name,observer,useCapture){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){try{element.detachEvent("on"+name,observer)
}catch(e){}}}}});
if(navigator.appVersion.match(/\bMSIE\b/)){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){if(element.tagName=="BODY"){break
}var 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
}},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{if(!window.opera||element.tagName=="BODY"){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]
}
}Element.addMethods()