var dom={'support':function()
{return document.getElementById&&document.getElementsByTagName&&document.createElement;},'byId':function(a)
{var elements=[],el;for(var i=0;i<arguments.length;i++){el=document.getElementById(arguments[i]);if(el){elements.push(el);}}
if(elements.length==0){return false;}else if(elements.length==1){return elements[0];}else{return elements;}},'byTag':function(tagname,target)
{if(!target){target=document;}
return target.getElementsByTagName(tagname);},'byClass':function(classname,target,tag)
{if(!target){target=document;}
if(!tag){tag='*';}
var elements=this.byTag(tag);var result=[];var len=elements.length;var re=new RegExp('\\b'+classname+'\\b');for(var i=0;i<len;i++){if(!elements[i].className){continue;}
if(elements[i].className.match(re)){result.push(elements[i]);}}
return result;},'parseStyle':function(target,style)
{if(!target){return;}
var styles=style.split(';');for(var i=0;i<styles.length;i++){var rule=styles[i].split(':');if(rule[0]&&rule[1]){target.style[rule[0]]=rule[1];}}},'element':function(type,content,attrib,nodes,mode,remove_content)
{var tag=document.createElement(type);nodes=typeof nodes!='object'?(nodes?[nodes]:[]):(nodes.length?nodes:[nodes]);attrib=attrib?attrib:{};mode=mode=='replace'?'replace':'append';var content=typeof content!='object'&&content?document.createTextNode(content):content;for(var name in attrib){if(name=='class'){tag.className=attrib[name];}else if(name=='style'){this.parseStyle(tag,attrib[name]);}else{tag.setAttribute(name,attrib[name]);}}
if(content){tag.appendChild(content);}
if(nodes.length==0){return tag;}
for(var i=0;i<nodes.length;i++){var node=typeof nodes[i]=='string'?this.byId(nodes[i]):nodes[i];if(!node){continue;}
if(remove_content){this.empty(node);}
if(mode=='replace'){node.parentNode.replaceChild(tag.cloneNode(true),node);}else{node.appendChild(tag.cloneNode(true));}}
return tag;},'content':function(target,content,empty)
{if(!target){return;}
if(empty){this.empty(target);}
content=typeof content!='object'?document.createTextNode(content):content;target.appendChild(content);},'text':function(content)
{return document.createTextNode(content);},'empty':function(target)
{if(!target){return;}
while(target.firstChild){dom.remove(target.firstChild);}},'replace':function(node,target)
{try{target.parentNode.replaceChild(node,target);return true;}catch(e){return false;}},'remove':function(target)
{if(!target){return false;}
target.parentNode.removeChild(target);},'before':function(node,target)
{node.parentNode.insertBefore(node,target);},'after':function(node,target)
{target.parentNode.insertBefore(node,target.nextSibling);},'first':function(node,target)
{if(target.firstChild){this.before(node,target.firstChild);}else{target.appendChild(node);}},'clone':function(target,recursive)
{return target.cloneNode(recursive);},'fragment':function()
{return document.createDocumentFragment();},'tree':function(node,parent)
{if(!node){return false;}
if(node.nodeType!=1){return false;}
var nodes=node.childNodes;var len=nodes.length;var tag,tmp,tree;var passed=false;parent=parent?parent:{'self':node};for(var i=0;i<len;i++){if(nodes[i].nodeType!=1){continue;}
tag=nodes[i].tagName.toLowerCase();element=nodes[i];if(!parent[tag]){parent[tag]={'length':0,'tag':tag};}
index=parent[tag].length++;if(element.hasChildNodes()){parent[tag].self=element;parent[tag][index]=this.tree(element,parent[tag][index]);}else{parent[tag][index]={'length':0,'tag':tag,'self':element};}}
return parent;},'currentStyle':function(target)
{if(!document.defaultView&&!document.body.currentStyle){return false;}
var style=target.currentStyle?target.currentStyle:document.defaultView.getComputedStyle(target,'');var s={};if(!style){return null;}
if(style.item){for(var i=0;i<style.length;i++){var prop=style.item(i);s[prop]=style.getPropertyValue(prop);}}else{for(var o in style){s[o]=style[o];}}
return s;},'parseXML':function(str)
{var x=false;str='<xml>'+str+'</xml>';if(typeof DOMParser!="undefined"){var parser=new DOMParser();try{x=parser.parseFromString(str,'text/xml');}catch(e){return false;}}else if(window.ActiveXObject){try{x=new ActiveXObject("Microsoft.XMLDOM");x.async=false;x.loadXML(str);}catch(e){return false;}}
return x?x.firstChild:false;},'parseHTML':function(html,parent)
{var xml=this.parseXML(html),type;if(!xml){return false;}
if(!parent){parent=this.fragment();}
var __parseNode__=function(node,parent)
{var child,element,i,attrib={},type;type=node.nodeType;if(type==1){if(node.attributes.length>0){for(i=0;i<node.attributes.length;i++){attrib[node.attributes[i].name]=node.attributes[i].value;}}
element=dom.element(node.nodeName,'',attrib);for(i=0;i<node.childNodes.length;i++){type=node.childNodes[i].nodeType;if(type==1||type==3){element=__parseNode__(node.childNodes[i],element);}}}else if(type==3){element=dom.text(node.nodeValue);}
parent.appendChild(element);return parent;};for(var i=0;i<xml.childNodes.length;i++){type=xml.childNodes[i].nodeType;if(type==1||type==3){parent=__parseNode__(xml.childNodes[i],parent);}}
return parent;}};