var Prototype={
Version: '1.5.1',
Browser:{
IE:     !!(window.attachEvent && !window.opera),
Opera:  !!window.opera,
WebKit: navigator.userAgent.indexOf('AppleWebKit/')> -1,
Gecko:  navigator.userAgent.indexOf('Gecko')> -1 && navigator.userAgent.indexOf('KHTML')==-1
},
BrowserFeatures:{
XPath: !!document.evaluate,
ElementExtensions: !!window.HTMLElement,
SpecificElementExtensions:
(document.createElement('div').__proto__ !==
 document.createElement('form').__proto__)
},
ScriptFragment: '<script[^>]*>([\u0001-\uFFFF]*?)</script>',
JSONFilter: /^\/\*-secure-\s*(.*)\s*\*\/\s*$/,
emptyFunction: function(){},
K: function(x){return x}
}
var Class={
create: function(){
return function(){
this.initialize.apply(this, arguments);
}
}
}
var Abstract=new Object();
Object.extend=function(destination, source){
for(var property in source){
destination[property]=source[property];
}
return destination;
}
Object.extend(Object,{
inspect: function(object){
try{
if(object===undefined)return 'undefined';
if(object===null)return 'null';
return object.inspect ? object.inspect(): object.toString();
} catch(e){
if(e instanceof RangeError)return '...';
throw e;
}
},
toJSON: function(object){
var type=typeof object;
switch(type){
case 'undefined':
case 'function':
case 'unknown': return;
case 'boolean': return object.toString();
}
if(object===null)return 'null';
if(object.toJSON)return object.toJSON();
if(object.ownerDocument===document)return;
var results=[];
for(var property in object){
var value=Object.toJSON(object[property]);
if(value !==undefined)
results.push(property.toJSON()+ ': ' + value);
}
return '{' + results.join(', ')+ '}';
},
keys: function(object){
var keys=[];
for(var property in object)
keys.push(property);
return keys;
},
values: function(object){
var values=[];
for(var property in object)
values.push(object[property]);
return values;
},
clone: function(object){
return Object.extend({}, object);
}
});
Function.prototype.bind=function(){
var __method=this, args=$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));
}
}
Object.extend(Number.prototype,{
toColorPart: function(){
return this.toPaddedString(2, 16);
},
succ: function(){
return this + 1;
},
times: function(iterator){
$R(0, this, true).each(iterator);
return this;
},
toPaddedString: function(length, radix){
var string=this.toString(radix||10);
return '0'.times(length - string.length)+ string;
},
toJSON: function(){
return isFinite(this)? this.toString(): 'null';
}
});
Date.prototype.toJSON=function(){
return '"' + this.getFullYear()+ '-' +
(this.getMonth()+ 1).toPaddedString(2)+ '-' +
this.getDate().toPaddedString(2)+ 'T' +
this.getHours().toPaddedString(2)+ ':' +
this.getMinutes().toPaddedString(2)+ ':' +
this.getSeconds().toPaddedString(2)+ '"';
};
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;
}
}
}
}
Object.extend(String,{
interpret: function(value){
return value==null ? '' : String(value);
},
specialChar:{
'\b': '\\b',
'\t': '\\t',
'\n': '\\n',
'\f': '\\f',
'\r': '\\r',
'\\': '\\\\'
}
});
Object.extend(String.prototype,{
gsub: function(pattern, replacement){
var result='', source=this, match;
replacement=arguments.callee.prepareReplacement(replacement);
while(source.length > 0){
if(match=source.match(pattern)){
result +=source.slice(0, match.index);
result +=String.interpret(replacement(match));
source=source.slice(match.index + match[0].length);
} else{
result +=source, source='';
}
}
return result;
},
sub: function(pattern, replacement, count){
replacement=this.gsub.prepareReplacement(replacement);
count=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 self=arguments.callee;
self.text.data=this;
return self.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 key=decodeURIComponent(pair.shift());
var value=pair.length > 1 ? pair.join('='): pair[0];
if(value !=undefined)value=decodeURIComponent(value);
if(key in hash){
if(hash[key].constructor !=Array)hash[key]=[hash[key]];
hash[key].push(value);
}
else hash[key]=value;
}
return hash;
});
},
toArray: function(){
return this.split('');
},
succ: function(){
return this.slice(0, this.length - 1)+
String.fromCharCode(this.charCodeAt(this.length - 1)+ 1);
},
times: function(count){
var result='';
for(var i=0; i < count; i++)result +=this;
return result;
},
camelize: function(){
var parts=this.split('-'), len=parts.length;
if(len==1)return parts[0];
var camelized=this.charAt(0)=='-'
? parts[0].charAt(0).toUpperCase()+ parts[0].substring(1)
: parts[0];
for(var i=1; i < len; i++)
camelized +=parts[i].charAt(0).toUpperCase()+ parts[i].substring(1);
return camelized;
},
capitalize: function(){
return this.charAt(0).toUpperCase()+ this.substring(1).toLowerCase();
},
underscore: function(){
return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
},
dasherize: function(){
return this.gsub(/_/,'-');
},
inspect: function(useDoubleQuotes){
var escapedString=this.gsub(/[\x00-\x1f\\]/, function(match){
var character=String.specialChar[match[0]];
return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
});
if(useDoubleQuotes)return '"' + escapedString.replace(/"/g, '\\"')+ '"';
return "'" + escapedString.replace(/'/g, '\\\'')+ "'";
},
toJSON: function(){
return this.inspect(true);
},
unfilterJSON: function(filter){
return this.sub(filter||Prototype.JSONFilter, '#{1}');
},
evalJSON: function(sanitize){
var json=this.unfilterJSON();
try{
if(!sanitize||(/^("(\\.|[^"\\\n\r])*?"|[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t])+?$/.test(json)))
return eval('(' + json + ')');
} catch(e){}
throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
},
include: function(pattern){
return this.indexOf(pattern)> -1;
},
startsWith: function(pattern){
return this.indexOf(pattern)===0;
},
endsWith: function(pattern){
var d=this.length - pattern.length;
return d >=0 && this.lastIndexOf(pattern)===d;
},
empty: function(){
return this=='';
},
blank: function(){
return /^\s*$/.test(this);
}
});
if(Prototype.Browser.WebKit||Prototype.Browser.IE)Object.extend(String.prototype,{
escapeHTML: function(){
return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
},
unescapeHTML: function(){
return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
}
});
String.prototype.gsub.prepareReplacement=function(replacement){
if(typeof replacement=='function')return replacement;
var template=new Template(replacement);
return function(match){return template.evaluate(match)};
}
String.prototype.parseQuery=String.prototype.toQueryParams;
Object.extend(String.prototype.escapeHTML,{
div:  document.createElement('div'),
text: document.createTextNode('')
});
with(String.prototype.escapeHTML)div.appendChild(text);
var Template=Class.create();
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={}, $continue=new Error('"throw $continue" is deprecated, use "return" instead');
var Enumerable={
each: function(iterator){
var index=0;
try{
this._each(function(value){
iterator(value, index++);
});
} catch(e){
if(e !=$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;
}
}
if(Prototype.Browser.WebKit){
$A=Array.from=function(iterable){
if(!iterable)return [];
if(!(typeof iterable=='function' && iterable=='[object NodeList]')&&
iterable.toArray){
return iterable.toArray();
} else{
var results=[];
for(var i=0, length=iterable.length; i < length; i++)
results.push(iterable[i]);
return results;
}
}
}
Object.extend(Array.prototype, Enumerable);
if(!Array.prototype._reverse)
Array.prototype._reverse=Array.prototype.reverse;
Object.extend(Array.prototype,{
_each: function(iterator){
for(var i=0, length=this.length; i < length; i++)
iterator(this[i]);
},
clear: function(){
this.length=0;
return this;
},
first: function(){
return this[0];
},
last: function(){
return this[this.length - 1];
},
compact: function(){
return this.select(function(value){
return value !=null;
});
},
flatten: function(){
return this.inject([], function(array, value){
return array.concat(value && value.constructor==Array ?
value.flatten(): [value]);
});
},
without: function(){
var values=$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(sorted){
return this.inject([], function(array, value, index){
if(0==index||(sorted ? array.last()!=value : !array.include(value)))
array.push(value);
return array;
});
},
clone: function(){
return [].concat(this);
},
size: function(){
return this.length;
},
inspect: function(){
return '[' + this.map(Object.inspect).join(', ')+ ']';
},
toJSON: function(){
var results=[];
this.each(function(object){
var value=Object.toJSON(object);
if(value !==undefined)results.push(value);
});
return '[' + results.join(', ')+ ']';
}
});
Array.prototype.toArray=Array.prototype.clone;
function $w(string){
string=string.strip();
return string ? string.split(/\s+/): [];
}
if(Prototype.Browser.Opera){
Array.prototype.concat=function(){
var array=[];
for(var i=0, length=this.length; i < length; i++)array.push(this[i]);
for(var i=0, length=arguments.length; i < length; i++){
if(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(object){
if(object instanceof Hash)this.merge(object);
else Object.extend(this, object||{});
};
Object.extend(Hash,{
toQueryString: function(obj){
var parts=[];
parts.add=arguments.callee.addPair;
this.prototype._each.call(obj, function(pair){
if(!pair.key)return;
var value=pair.value;
if(value && typeof value=='object'){
if(value.constructor==Array)value.each(function(value){
parts.add(pair.key, value);
});
return;
}
parts.add(pair.key, value);
});
return parts.join('&');
},
toJSON: function(object){
var results=[];
this.prototype._each.call(object, function(pair){
var value=Object.toJSON(pair.value);
if(value !==undefined)results.push(pair.key.toJSON()+ ': ' + value);
});
return '{' + results.join(', ')+ '}';
}
});
Hash.toQueryString.addPair=function(key, value, prefix){
key=encodeURIComponent(key);
if(value===undefined)this.push(key);
else this.push(key + '=' +(value==null ? '' : encodeURIComponent(value)));
}
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(', ')+ '}>';
},
toJSON: function(){
return Hash.toJSON(this);
}
});
function $H(object){
if(object instanceof Hash)return object;
return new Hash(object);
};
if(function(){
var i=0, Test=function(value){this.key=value};
Test.prototype.key='foo';
for(var property in new Test('bar'))i++;
return i > 1;
}())Hash.prototype._each=function(iterator){
var cache=[];
for(var key in this){
var value=this[key];
if((value && value==Hash.prototype[key])||cache.include(key))continue;
cache.push(key);
var pair=[key, value];
pair.key=key;
pair.value=value;
iterator(pair);
}
};
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=Object.clone(this.options.parameters);
if(!['get', 'post'].include(this.method)){
params['_method']=this.method;
this.method='post';
}
this.parameters=params;
if(params=Hash.toQueryString(params)){
if(this.method=='get')
this.url +=(this.url.include('?')? '&' : '?')+ params;
else if(/Konqueror|Safari|KHTML/.test(navigator.userAgent))
params +='&_=';
}
try{
if(this.options.onCreate)this.options.onCreate(this.transport);
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();
this.body=this.method=='post' ?(this.options.postBody||params): null;
this.transport.send(this.body);
/* Force Firefox to handle ready state 4 for synchronous requests */
if(!this.options.asynchronous && this.transport.overrideMimeType)
this.onStateChange();
}
catch(e){
this.dispatchException(e);
}
},
onStateChange: function(){
var readyState=this.transport.readyState;
if(readyState > 1 && !((readyState==4)&& this._complete))
this.respondToReadyState(this.transport.readyState);
},
setRequestHeaders: function(){
var headers={
'X-Requested-With': 'XMLHttpRequest',
'X-Prototype-Version': Prototype.Version,
'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
};
if(this.method=='post'){
headers['Content-type']=this.options.contentType +
(this.options.encoding ? '; charset=' + this.options.encoding : '');
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
$H(extras).each(function(pair){headers[pair.key]=pair.value});
}
for(var name in headers)
this.transport.setRequestHeader(name, headers[name]);
},
success: function(){
return !this.transport.status
||(this.transport.status >=200 && this.transport.status < 300);
},
respondToReadyState: function(readyState){
var state=Ajax.Request.Events[readyState];
var transport=this.transport, json=this.evalJSON();
if(state=='Complete'){
try{
this._complete=true;
(this.options['on' + this.transport.status]
||this.options['on' +(this.success()? 'Success' : 'Failure')]
||Prototype.emptyFunction)(transport, json);
} catch(e){
this.dispatchException(e);
}
var contentType=this.getHeader('Content-type');
if(contentType && contentType.strip().
match(/^(text|application)\/(x-)?(java|ecma)script(;.*)?$/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 ? json.evalJSON(): null;
} catch(e){return null}
},
evalResponse: function(){
try{
return eval((this.transport.responseText||'').unfilterJSON());
} catch(e){
this.dispatchException(e);
}
},
dispatchException: function(exception){
(this.options.onException||Prototype.emptyFunction)(this, exception);
Ajax.Responders.dispatch('onException', this, exception);
}
});
Ajax.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, $(parentElement)||document,
null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
for(var i=0, length=query.snapshotLength; i < length; i++)
results.push(query.snapshotItem(i));
return results;
};
document.getElementsByClassName=function(className, parentElement){
var q=".//*[contains(concat(' ', @class, ' '), ' " + className + " ')]";
return document._getElementsByXPath(q, parentElement);
}
} else document.getElementsByClassName=function(className, parentElement){
var children=($(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={};
Element.extend=function(element){
var F=Prototype.BrowserFeatures;
if(!element||!element.tagName||element.nodeType==3||
 element._extended||F.SpecificElementExtensions||element==window)
return element;
var methods={}, tagName=element.tagName, cache=Element.extend.cache,
 T=Element.Methods.ByTag;
if(!F.ElementExtensions){
Object.extend(methods, Element.Methods),
Object.extend(methods, Element.Methods.Simulated);
}
if(T[tagName])Object.extend(methods, T[tagName]);
for(var property in methods){
var value=methods[property];
if(typeof value=='function' && !(property in element))
element[property]=cache.findOrStore(value);
}
element._extended=Prototype.emptyFunction;
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('*')).each(Element.extend);
},
firstDescendant: function(element){
element=$(element).firstChild;
while(element && element.nodeType !=1)element=element.nextSibling;
return $(element);
},
immediateDescendants: function(element){
if(!(element=$(element).firstChild))return [];
while(element && element.nodeType !=1)element=element.nextSibling;
if(element)return [element].concat($(element).nextSiblings());
return [];
},
previousSiblings: function(element){
return $(element).recursivelyCollect('previousSibling');
},
nextSiblings: function(element){
return $(element).recursivelyCollect('nextSibling');
},
siblings: function(element){
element=$(element);
return element.previousSiblings().reverse().concat(element.nextSiblings());
},
match: function(element, selector){
if(typeof selector=='string')
selector=new Selector(selector);
return selector.match($(element));
},
up: function(element, expression, index){
element=$(element);
if(arguments.length==1)return $(element.parentNode);
var ancestors=element.ancestors();
return expression ? Selector.findElement(ancestors, expression, index):
ancestors[index||0];
},
down: function(element, expression, index){
element=$(element);
if(arguments.length==1)return element.firstDescendant();
var descendants=element.descendants();
return expression ? Selector.findElement(descendants, expression, index):
descendants[index||0];
},
previous: function(element, expression, index){
element=$(element);
if(arguments.length==1)return $(Selector.handlers.previousElementSibling(element));
var previousSiblings=element.previousSiblings();
return expression ? Selector.findElement(previousSiblings, expression, index):
previousSiblings[index||0];
},
next: function(element, expression, index){
element=$(element);
if(arguments.length==1)return $(Selector.handlers.nextElementSibling(element));
var nextSiblings=element.nextSiblings();
return expression ? Selector.findElement(nextSiblings, expression, index):
nextSiblings[index||0];
},
getElementsBySelector: function(){
var args=$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(Prototype.Browser.IE){
if(!element.attributes)return null;
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];
return attribute ? attribute.nodeValue : null;
}
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 $(element).innerHTML.blank();
},
descendantOf: function(element, ancestor){
element=$(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);
style=style=='float' ? 'cssFloat' : style.camelize();
var value=element.style[style];
if(!value){
var css=document.defaultView.getComputedStyle(element, null);
value=css ? css[style] : null;
}
if(style=='opacity')return value ? parseFloat(value): 1.0;
return value=='auto' ? null : value;
},
getOpacity: function(element){
return $(element).getStyle('opacity');
},
setStyle: function(element, styles, camelized){
element=$(element);
var elementStyle=element.style;
for(var property in styles)
if(property=='opacity')element.setOpacity(styles[property])
else
elementStyle[(property=='float'||property=='cssFloat')?
(elementStyle.styleFloat===undefined ? 'cssFloat' : 'styleFloat'):
(camelized ? property : property.camelize())]=styles[property];
return element;
},
setOpacity: function(element, value){
element=$(element);
element.style.opacity=(value==1||value==='')? '' :
(value < 0.00001)? 0 : value;
return element;
},
getDimensions: function(element){
element=$(element);
var display=$(element).getStyle('display');
if(display !='none' && display !=null)
return{width: element.offsetWidth, height: element.offsetHeight};
var els=element.style;
var originalVisibility=els.visibility;
var originalPosition=els.position;
var originalDisplay=els.display;
els.visibility='hidden';
els.position='absolute';
els.display='block';
var originalWidth=element.clientWidth;
var originalHeight=element.clientHeight;
els.display=originalDisplay;
els.position=originalPosition;
els.visibility=originalVisibility;
return{width: originalWidth, height: originalHeight};
},
makePositioned: function(element){
element=$(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=$(element);
if(!element._overflow)return element;
element.style.overflow=element._overflow=='auto' ? '' : element._overflow;
element._overflow=null;
return element;
}
};
Object.extend(Element.Methods,{
childOf: Element.Methods.descendantOf,
childElements: Element.Methods.immediateDescendants
});
if(Prototype.Browser.Opera){
Element.Methods._getStyle=Element.Methods.getStyle;
Element.Methods.getStyle=function(element, style){
switch(style){
case 'left':
case 'top':
case 'right':
case 'bottom':
if(Element._getStyle(element, 'position')=='static')return null;
default: return Element._getStyle(element, style);
}
};
}
else if(Prototype.Browser.IE){
Element.Methods.getStyle=function(element, style){
element=$(element);
style=(style=='float'||style=='cssFloat')? 'styleFloat' : style.camelize();
var value=element.style[style];
if(!value && element.currentStyle)value=element.currentStyle[style];
if(style=='opacity'){
if(value=(element.getStyle('filter')||'').match(/alpha\(opacity=(.*)\)/))
if(value[1])return parseFloat(value[1])/ 100;
return 1.0;
}
if(value=='auto'){
if((style=='width'||style=='height')&&(element.getStyle('display')!='none'))
return element['offset'+style.capitalize()] + 'px';
return null;
}
return value;
};
Element.Methods.setOpacity=function(element, value){
element=$(element);
var filter=element.getStyle('filter'), style=element.style;
if(value==1||value===''){
style.filter=filter.replace(/alpha\([^\)]*\)/gi,'');
return element;
} else if(value < 0.00001)value=0;
style.filter=filter.replace(/alpha\([^\)]*\)/gi, '')+
'alpha(opacity=' +(value * 100)+ ')';
return element;
};
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});
$A(div.childNodes).each(function(node){element.appendChild(node)});
} else{
element.innerHTML=html.stripScripts();
}
setTimeout(function(){html.evalScripts()}, 10);
return element;
}
}
else if(Prototype.Browser.Gecko){
Element.Methods.setOpacity=function(element, value){
element=$(element);
element.style.opacity=(value==1)? 0.999999 :
(value==='')? '' :(value < 0.00001)? 0 : value;
return element;
};
}
Element._attributeTranslations={
names:{
colspan:   "colSpan",
rowspan:   "rowSpan",
valign:    "vAlign",
datetime:  "dateTime",
accesskey: "accessKey",
tabindex:  "tabIndex",
enctype:   "encType",
maxlength: "maxLength",
readonly:  "readOnly",
longdesc:  "longDesc"
},
values:{
_getAttr: function(element, attribute){
return element.getAttribute(attribute, 2);
},
_flag: function(element, attribute){
return $(element).hasAttribute(attribute)? attribute : null;
},
style: function(element){
return element.style.cssText.toLowerCase();
},
title: function(element){
var node=element.getAttributeNode('title');
return node.specified ? node.nodeValue : null;
}
}
};
(function(){
Object.extend(this,{
href: this._getAttr,
src:  this._getAttr,
type: this._getAttr,
disabled: this._flag,
checked:  this._flag,
readonly: this._flag,
multiple: this._flag
});
}).call(Element._attributeTranslations.values);
Element.Methods.Simulated={
hasAttribute: function(element, attribute){
var t=Element._attributeTranslations, node;
attribute=t.names[attribute]||attribute;
node=$(element).getAttributeNode(attribute);
return node && node.specified;
}
};
Element.Methods.ByTag={};
Object.extend(Element, Element.Methods);
if(!Prototype.BrowserFeatures.ElementExtensions &&
 document.createElement('div').__proto__){
window.HTMLElement={};
window.HTMLElement.prototype=document.createElement('div').__proto__;
Prototype.BrowserFeatures.ElementExtensions=true;
}
Element.hasAttribute=function(element, attribute){
if(element.hasAttribute)return element.hasAttribute(attribute);
return Element.Methods.Simulated.hasAttribute(element, attribute);
};
Element.addMethods=function(methods){
var F=Prototype.BrowserFeatures, T=Element.Methods.ByTag;
if(!methods){
Object.extend(Form, Form.Methods);
Object.extend(Form.Element, Form.Element.Methods);
Object.extend(Element.Methods.ByTag,{
"FORM":     Object.clone(Form.Methods),
"INPUT":    Object.clone(Form.Element.Methods),
"SELECT":   Object.clone(Form.Element.Methods),
"TEXTAREA": Object.clone(Form.Element.Methods)
});
}
if(arguments.length==2){
var tagName=methods;
methods=arguments[1];
}
if(!tagName)Object.extend(Element.Methods, methods||{});
else{
if(tagName.constructor==Array)tagName.each(extend);
else extend(tagName);
}
function extend(tagName){
tagName=tagName.toUpperCase();
if(!Element.Methods.ByTag[tagName])
Element.Methods.ByTag[tagName]={};
Object.extend(Element.Methods.ByTag[tagName], methods);
}
function copy(methods, destination, onlyIfAbsent){
onlyIfAbsent=onlyIfAbsent||false;
var cache=Element.extend.cache;
for(var property in methods){
var value=methods[property];
if(!onlyIfAbsent||!(property in destination))
destination[property]=cache.findOrStore(value);
}
}
function findDOMClass(tagName){
var klass;
var trans={
"OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
"FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
"DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
"H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
"INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
"TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
"TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
"TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
"FrameSet", "IFRAME": "IFrame"
};
if(trans[tagName])klass='HTML' + trans[tagName] + 'Element';
if(window[klass])return window[klass];
klass='HTML' + tagName + 'Element';
if(window[klass])return window[klass];
klass='HTML' + tagName.capitalize()+ 'Element';
if(window[klass])return window[klass];
window[klass]={};
window[klass].prototype=document.createElement(tagName).__proto__;
return window[klass];
}
if(F.ElementExtensions){
copy(Element.Methods, HTMLElement.prototype);
copy(Element.Methods.Simulated, HTMLElement.prototype, true);
}
if(F.SpecificElementExtensions){
for(var tag in Element.Methods.ByTag){
var klass=findDOMClass(tag);
if(typeof klass=="undefined")continue;
copy(T[tag], klass.prototype);
}
}
Object.extend(Element, Element.Methods);
delete Element.ByTag;
};
var 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.expression=expression.strip();
this.compileMatcher();
},
compileMatcher: function(){
if(Prototype.BrowserFeatures.XPath && !(/\[[\w-]*?:/).test(this.expression))
return this.compileXPathMatcher();
var e=this.expression, ps=Selector.patterns, h=Selector.handlers,
c=Selector.criteria, le, p, m;
if(Selector._cache[e]){
this.matcher=Selector._cache[e]; return;
}
this.matcher=["this.matcher=function(root){",
"var r=root, h=Selector.handlers, c=false, n;"];
while(e && le !=e &&(/\S/).test(e)){
le=e;
for(var i in ps){
p=ps[i];
if(m=e.match(p)){
this.matcher.push(typeof c[i]=='function' ? c[i](m):
	      new Template(c[i]).evaluate(m));
e=e.replace(m[0], '');
break;
}
}
}
this.matcher.push("return h.unique(n);\n}");
eval(this.matcher.join('\n'));
Selector._cache[this.expression]=this.matcher;
},
compileXPathMatcher: function(){
var e=this.expression, ps=Selector.patterns,
x=Selector.xpath, le,  m;
if(Selector._cache[e]){
this.xpath=Selector._cache[e]; return;
}
this.matcher=['.//*'];
while(e && le !=e &&(/\S/).test(e)){
le=e;
for(var i in ps){
if(m=e.match(ps[i])){
this.matcher.push(typeof x[i]=='function' ? x[i](m):
new Template(x[i]).evaluate(m));
e=e.replace(m[0], '');
break;
}
}
}
this.xpath=this.matcher.join('');
Selector._cache[this.expression]=this.xpath;
},
findElements: function(root){
root=root||document;
if(this.xpath)return document._getElementsByXPath(this.xpath, root);
return this.matcher(root);
},
match: function(element){
return this.findElements(document).include(element);
},
toString: function(){
return this.expression;
},
inspect: function(){
return "#<Selector:" + this.expression.inspect()+ ">";
}
};
Object.extend(Selector,{
_cache:{},
xpath:{
descendant:   "//*",
child:        "/*",
adjacent:     "/following-sibling::*[1]",
laterSibling: '/following-sibling::*',
tagName:      function(m){
if(m[1]=='*')return '';
return "[local-name()='" + m[1].toLowerCase()+
 "' or local-name()='" + m[1].toUpperCase()+ "']";
},
className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
id:           "[@id='#{1}']",
attrPresence: "[@#{1}]",
attr: function(m){
m[3]=m[5]||m[6];
return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
},
pseudo: function(m){
var h=Selector.xpath.pseudos[m[1]];
if(!h)return '';
if(typeof h==='function')return h(m);
return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
},
operators:{
'=':  "[@#{1}='#{3}']",
'!=': "[@#{1}!='#{3}']",
'^=': "[starts-with(@#{1}, '#{3}')]",
'$=': "[substring(@#{1},(string-length(@#{1})- string-length('#{3}')+ 1))='#{3}']",
'*=': "[contains(@#{1}, '#{3}')]",
'~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
'|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
},
pseudos:{
'first-child': '[not(preceding-sibling::*)]',
'last-child':  '[not(following-sibling::*)]',
'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
'empty':       "[count(*)=0 and(count(text())=0 or translate(text(), ' \t\r\n', '')='')]",
'checked':     "[@checked]",
'disabled':    "[@disabled]",
'enabled':     "[not(@disabled)]",
'not': function(m){
var e=m[6], p=Selector.patterns,
x=Selector.xpath, le, m, v;
var exclusion=[];
while(e && le !=e &&(/\S/).test(e)){
le=e;
for(var i in p){
if(m=e.match(p[i])){
v=typeof x[i]=='function' ? x[i](m): new Template(x[i]).evaluate(m);
exclusion.push("(" + v.substring(1, v.length - 1)+ ")");
e=e.replace(m[0], '');
break;
}
}
}
return "[not(" + exclusion.join(" and ")+ ")]";
},
'nth-child':      function(m){
return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*)+ 1)", m);
},
'nth-last-child': function(m){
return Selector.xpath.pseudos.nth("(count(./following-sibling::*)+ 1)", m);
},
'nth-of-type':    function(m){
return Selector.xpath.pseudos.nth("position()", m);
},
'nth-last-of-type': function(m){
return Selector.xpath.pseudos.nth("(last()+ 1 - position())", m);
},
'first-of-type':  function(m){
m[6]="1"; return Selector.xpath.pseudos['nth-of-type'](m);
},
'last-of-type':   function(m){
m[6]="1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
},
'only-of-type':   function(m){
var p=Selector.xpath.pseudos; return p['first-of-type'](m)+ p['last-of-type'](m);
},
nth: function(fragment, m){
var mm, formula=m[6], predicate;
if(formula=='even')formula='2n+0';
if(formula=='odd')formula='2n+1';
if(mm=formula.match(/^(\d+)$/))// digit only
return '[' + fragment + "=" + mm[1] + ']';
if(mm=formula.match(/^(-?\d*)?n(([+-])(\d+))?/)){
if(mm[1]=="-")mm[1]=-1;
var a=mm[1] ? Number(mm[1]): 1;
var b=mm[2] ? Number(mm[2]): 0;
predicate="[((#{fragment} - #{b})mod #{a}=0)and " +
"((#{fragment} - #{b})div #{a} >=0)]";
return new Template(predicate).evaluate({
fragment: fragment, a: a, b: b});
}
}
}
},
criteria:{
tagName:      'n=h.tagName(n, r, "#{1}", c);   c=false;',
className:    'n=h.className(n, r, "#{1}", c); c=false;',
id:           'n=h.id(n, r, "#{1}", c);        c=false;',
attrPresence: 'n=h.attrPresence(n, r, "#{1}"); c=false;',
attr: function(m){
m[3]=(m[5]||m[6]);
return new Template('n=h.attr(n, r, "#{1}", "#{3}", "#{2}"); c=false;').evaluate(m);
},
pseudo:       function(m){
if(m[6])m[6]=m[6].replace(/"/g, '\\"');
return new Template('n=h.pseudo(n, "#{1}", "#{6}", r, c); c=false;').evaluate(m);
},
descendant:   'c="descendant";',
child:        'c="child";',
adjacent:     'c="adjacent";',
laterSibling: 'c="laterSibling";'
},
patterns:{
laterSibling: /^\s*~\s*/,
child:        /^\s*>\s*/,
adjacent:     /^\s*\+\s*/,
descendant:   /^\s/,
tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
id:           /^#([\w\-\*]+)(\b|$)/,
className:    /^\.([\w\-\*]+)(\b|$)/,
pseudo:       /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|\s|(?=:))/,
attrPresence: /^\[([\w]+)\]/,
attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\]]*?)\4|([^'"][^\]]*?)))?\]/
},
handlers:{
concat: function(a, b){
for(var i=0, node; node=b[i]; i++)
a.push(node);
return a;
},
mark: function(nodes){
for(var i=0, node; node=nodes[i]; i++)
node._counted=true;
return nodes;
},
unmark: function(nodes){
for(var i=0, node; node=nodes[i]; i++)
node._counted=undefined;
return nodes;
},
index: function(parentNode, reverse, ofType){
parentNode._counted=true;
if(reverse){
for(var nodes=parentNode.childNodes, i=nodes.length - 1, j=1; i >=0; i--){
node=nodes[i];
if(node.nodeType==1 &&(!ofType||node._counted))node.nodeIndex=j++;
}
} else{
for(var i=0, j=1, nodes=parentNode.childNodes; node=nodes[i]; i++)
if(node.nodeType==1 &&(!ofType||node._counted))node.nodeIndex=j++;
}
},
unique: function(nodes){
if(nodes.length==0)return nodes;
var results=[], n;
for(var i=0, l=nodes.length; i < l; i++)
if(!(n=nodes[i])._counted){
n._counted=true;
results.push(Element.extend(n));
}
return Selector.handlers.unmark(results);
},
descendant: function(nodes){
var h=Selector.handlers;
for(var i=0, results=[], node; node=nodes[i]; i++)
h.concat(results, node.getElementsByTagName('*'));
return results;
},
child: function(nodes){
var h=Selector.handlers;
for(var i=0, results=[], node; node=nodes[i]; i++){
for(var j=0, children=[], child; child=node.childNodes[j]; j++)
if(child.nodeType==1 && child.tagName !='!')results.push(child);
}
return results;
},
adjacent: function(nodes){
for(var i=0, results=[], node; node=nodes[i]; i++){
var next=this.nextElementSibling(node);
if(next)results.push(next);
}
return results;
},
laterSibling: function(nodes){
var h=Selector.handlers;
for(var i=0, results=[], node; node=nodes[i]; i++)
h.concat(results, Element.nextSiblings(node));
return results;
},
nextElementSibling: function(node){
while(node=node.nextSibling)
	      if(node.nodeType==1)return node;
return null;
},
previousElementSibling: function(node){
while(node=node.previousSibling)
if(node.nodeType==1)return node;
return null;
},
tagName: function(nodes, root, tagName, combinator){
tagName=tagName.toUpperCase();
var results=[], h=Selector.handlers;
if(nodes){
if(combinator){
if(combinator=="descendant"){
for(var i=0, node; node=nodes[i]; i++)
h.concat(results, node.getElementsByTagName(tagName));
return results;
} else nodes=this[combinator](nodes);
if(tagName=="*")return nodes;
}
for(var i=0, node; node=nodes[i]; i++)
if(node.tagName.toUpperCase()==tagName)results.push(node);
return results;
} else return root.getElementsByTagName(tagName);
},
id: function(nodes, root, id, combinator){
var targetNode=$(id), h=Selector.handlers;
if(!nodes && root==document)return targetNode ? [targetNode] : [];
if(nodes){
if(combinator){
if(combinator=='child'){
for(var i=0, node; node=nodes[i]; i++)
if(targetNode.parentNode==node)return [targetNode];
} else if(combinator=='descendant'){
for(var i=0, node; node=nodes[i]; i++)
if(Element.descendantOf(targetNode, node))return [targetNode];
} else if(combinator=='adjacent'){
for(var i=0, node; node=nodes[i]; i++)
if(Selector.handlers.previousElementSibling(targetNode)==node)
return [targetNode];
} else nodes=h[combinator](nodes);
}
for(var i=0, node; node=nodes[i]; i++)
if(node==targetNode)return [targetNode];
return [];
}
return(targetNode && Element.descendantOf(targetNode, root))? [targetNode] : [];
},
className: function(nodes, root, className, combinator){
if(nodes && combinator)nodes=this[combinator](nodes);
return Selector.handlers.byClassName(nodes, root, className);
},
byClassName: function(nodes, root, className){
if(!nodes)nodes=Selector.handlers.descendant([root]);
var needle=' ' + className + ' ';
for(var i=0, results=[], node, nodeClassName; node=nodes[i]; i++){
nodeClassName=node.className;
if(nodeClassName.length==0)continue;
if(nodeClassName==className||(' ' + nodeClassName + ' ').include(needle))
results.push(node);
}
return results;
},
attrPresence: function(nodes, root, attr){
var results=[];
for(var i=0, node; node=nodes[i]; i++)
if(Element.hasAttribute(node, attr))results.push(node);
return results;
},
attr: function(nodes, root, attr, value, operator){
if(!nodes)nodes=root.getElementsByTagName("*");
var handler=Selector.operators[operator], results=[];
for(var i=0, node; node=nodes[i]; i++){
var nodeValue=Element.readAttribute(node, attr);
if(nodeValue===null)continue;
if(handler(nodeValue, value))results.push(node);
}
return results;
},
pseudo: function(nodes, name, value, root, combinator){
if(nodes && combinator)nodes=this[combinator](nodes);
if(!nodes)nodes=root.getElementsByTagName("*");
return Selector.pseudos[name](nodes, value, root);
}
},
pseudos:{
'first-child': function(nodes, value, root){
for(var i=0, results=[], node; node=nodes[i]; i++){
if(Selector.handlers.previousElementSibling(node))continue;
results.push(node);
}
return results;
},
'last-child': function(nodes, value, root){
for(var i=0, results=[], node; node=nodes[i]; i++){
if(Selector.handlers.nextElementSibling(node))continue;
results.push(node);
}
return results;
},
'only-child': function(nodes, value, root){
var h=Selector.handlers;
for(var i=0, results=[], node; node=nodes[i]; i++)
if(!h.previousElementSibling(node)&& !h.nextElementSibling(node))
results.push(node);
return results;
},
'nth-child':        function(nodes, formula, root){
return Selector.pseudos.nth(nodes, formula, root);
},
'nth-last-child':   function(nodes, formula, root){
return Selector.pseudos.nth(nodes, formula, root, true);
},
'nth-of-type':      function(nodes, formula, root){
return Selector.pseudos.nth(nodes, formula, root, false, true);
},
'nth-last-of-type': function(nodes, formula, root){
return Selector.pseudos.nth(nodes, formula, root, true, true);
},
'first-of-type':    function(nodes, formula, root){
return Selector.pseudos.nth(nodes, "1", root, false, true);
},
'last-of-type':     function(nodes, formula, root){
return Selector.pseudos.nth(nodes, "1", root, true, true);
},
'only-of-type':     function(nodes, formula, root){
var p=Selector.pseudos;
return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
},
getIndices: function(a, b, total){
if(a==0)return b > 0 ? [b] : [];
return $R(1, total).inject([], function(memo, i){
if(0==(i - b)% a &&(i - b)/ a >=0)memo.push(i);
return memo;
});
},
nth: function(nodes, formula, root, reverse, ofType){
if(nodes.length==0)return [];
if(formula=='even')formula='2n+0';
if(formula=='odd')formula='2n+1';
var h=Selector.handlers, results=[], indexed=[], m;
h.mark(nodes);
for(var i=0, node; node=nodes[i]; i++){
if(!node.parentNode._counted){
h.index(node.parentNode, reverse, ofType);
indexed.push(node.parentNode);
}
}
if(formula.match(/^\d+$/)){
formula=Number(formula);
for(var i=0, node; node=nodes[i]; i++)
if(node.nodeIndex==formula)results.push(node);
} else if(m=formula.match(/^(-?\d*)?n(([+-])(\d+))?/)){
if(m[1]=="-")m[1]=-1;
var a=m[1] ? Number(m[1]): 1;
var b=m[2] ? Number(m[2]): 0;
var indices=Selector.pseudos.getIndices(a, b, nodes.length);
for(var i=0, node, l=indices.length; node=nodes[i]; i++){
for(var j=0; j < l; j++)
if(node.nodeIndex==indices[j])results.push(node);
}
}
h.unmark(nodes);
h.unmark(indexed);
return results;
},
'empty': function(nodes, value, root){
for(var i=0, results=[], node; node=nodes[i]; i++){
if(node.tagName=='!'||(node.firstChild && !node.innerHTML.match(/^\s*$/)))continue;
results.push(node);
}
return results;
},
'not': function(nodes, selector, root){
var h=Selector.handlers, selectorType, m;
var exclusions=new Selector(selector).findElements(root);
h.mark(exclusions);
for(var i=0, results=[], node; node=nodes[i]; i++)
if(!node._counted)results.push(node);
h.unmark(exclusions);
return results;
},
'enabled': function(nodes, value, root){
for(var i=0, results=[], node; node=nodes[i]; i++)
if(!node.disabled)results.push(node);
return results;
},
'disabled': function(nodes, value, root){
for(var i=0, results=[], node; node=nodes[i]; i++)
if(node.disabled)results.push(node);
return results;
},
'checked': function(nodes, value, root){
for(var i=0, results=[], node; node=nodes[i]; i++)
if(node.checked)results.push(node);
return results;
}
},
operators:{
'=':  function(nv, v){return nv==v;},
'!=': function(nv, v){return nv !=v;},
'^=': function(nv, v){return nv.startsWith(v);},
'$=': function(nv, v){return nv.endsWith(v);},
'*=': function(nv, v){return nv.include(v);},
'~=': function(nv, v){return(' ' + nv + ' ').include(' ' + v + ' ');},
'|=': function(nv, v){return('-' + nv.toUpperCase()+ '-').include('-' + v.toUpperCase()+ '-');}
},
matchElements: function(elements, expression){
var matches=new Selector(expression).findElements(), h=Selector.handlers;
h.mark(matches);
for(var i=0, results=[], element; element=elements[i]; i++)
if(element._counted)results.push(element);
h.unmark(matches);
return results;
},
findElement: function(elements, expression, index){
if(typeof expression=='number'){
index=expression; expression=false;
}
return Selector.matchElements(elements, expression||'*')[index||0];
},
findChildElements: function(element, expressions){
var exprs=expressions.join(','), expressions=[];
exprs.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m){
expressions.push(m[1].strip());
});
var results=[], h=Selector.handlers;
for(var i=0, l=expressions.length, selector; i < l; i++){
selector=new Selector(expressions[i].strip());
h.concat(results, selector.findElements(element));
}
return(l > 1)? h.unique(results): results;
}
});
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 !=null){
 	if(key in result){
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(form).invoke('disable');
return form;
},
enable: function(form){
form=$(form);
Form.getElements(form).invoke('enable');
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;
},
request: function(form, options){
form=$(form), options=Object.clone(options||{});
var params=options.parameters;
options.parameters=form.serialize(true);
if(params){
if(typeof params=='string')params=params.toQueryParams();
Object.extend(options.parameters, params);
}
if(form.hasAttribute('method')&& !options.method)
options.method=form.method;
return new Ajax.Request(form.readAttribute('action'), options);
}
}
Form.Element={
focus: function(element){
$(element).focus();
return element;
},
select: function(element){
$(element).select();
return element;
}
}
Form.Element.Methods={
serialize: function(element){
element=$(element);
if(!element.disabled && element.name){
var value=element.getValue();
if(value !=undefined){
var pair={};
pair[element.name]=value;
return 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);
try{
element.focus();
if(element.select &&(element.tagName.toLowerCase()!='input'||
!['button', 'reset', 'submit'].include(element.type)))
element.select();
} catch(e){}
return element;
},
disable: function(element){
element=$(element);
element.blur();
element.disabled=true;
return element;
},
enable: function(element){
element=$(element);
element.disabled=false;
return element;
}
}
var Field=Form.Element;
var $F=Form.Element.Methods.getValue;
Form.Element.Serializers={
input: function(element){
switch(element.type.toLowerCase()){
case 'checkbox':
case 'radio':
return Form.Element.Serializers.inputSelector(element);
default:
return Form.Element.Serializers.textarea(element);
}
},
inputSelector: function(element){
return element.checked ? element.value : null;
},
textarea: function(element){
return element.value;
},
select: function(element){
return this[element.type=='select-one' ?
'selectOne' : 'selectMany'](element);
},
selectOne: function(element){
var index=element.selectedIndex;
return index >=0 ? this.optionValue(element.options[index]): null;
},
selectMany: function(element){
var values, length=element.length;
if(!length)return null;
for(var i=0, values=[]; i < length; i++){
var opt=element.options[i];
if(opt.selected)values.push(this.optionValue(opt));
}
return values;
},
optionValue: function(opt){
return Element.extend(opt).hasAttribute('value')? opt.value : opt.text;
}
}
Abstract.TimedObserver=function(){}
Abstract.TimedObserver.prototype={
initialize: function(element, frequency, callback){
this.frequency=frequency;
this.element=$(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' &&
(Prototype.Browser.WebKit||element.attachEvent))
name='keydown';
Event._observeAndCache(element, name, observer, useCapture);
},
stopObserving: function(element, name, observer, useCapture){
element=$(element);
useCapture=useCapture||false;
if(name=='keypress' &&
(Prototype.Browser.WebKit||element.attachEvent))
name='keydown';
if(element.removeEventListener){
element.removeEventListener(name, observer, useCapture);
} else if(element.detachEvent){
try{
element.detachEvent('on' + name, observer);
} catch(e){}
}
}
});
if(Prototype.Browser.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){
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(Prototype.Browser.WebKit){
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();