//生成复选框树
function CheckTree(myName)
{
	this.myName=myName;
	this.root=null;
	this.countAllLevels=false;
	this.checkFormat='(%n% checked)';
	this.evtProcessed=navigator.userAgent.indexOf('Safari')>-1?'safRtnVal':'returnValue';
	CheckTree.list[myName]=this};
	CheckTree.list={};
	CheckTree.prototype.init=function()
	{
		with(this)
		{
			if(!document.getElementById)return;
			root=document.getElementById('tree-'+myName);
			if(root)
			{
				var lists=root.getElementsByTagName('ul');
				for(var ul=0;ul<lists.length;ul++)
				{   
				        
					   // lists[0].style.display='none';
					     //lists[1].style.display='none';
					    //lists[6].style.display='none';
					if (ul!=0) {
					    lists[ul].style.display='none';
					}
					
					lists[ul].treeObj=this;
					lists[ul].setBoxStates=setBoxStates;
					var fn=new Function('e','this.setBoxStates(e)');
					if(lists[ul].addEventListener&&navigator.vendor!='Apple Computer,Inc.')
					{
						lists[ul].addEventListener('click',fn,false)
					 }
						else lists[ul].onclick=fn
						}
						root.treeObj=this;root.setBoxStates=setBoxStates;
						if(root.addEventListener&&navigator.vendor!='Apple Computer,Inc.')
						{
							root.addEventListener('click',new Function('e',myName+'.click(e)'),false)
						}
						else root.onclick=new Function('e',myName+'.click(e)');
						root.setBoxStates({},true,true);
						var nodes=root.getElementsByTagName('li');
						for(var li=0;li<nodes.length;li++)
						{
							if(nodes[li].id.match(/^show-/)){nodes[li].className=(nodes[li].className=='last'?'plus-last':'plus')
						 }
					}
				}
			}
	};
	CheckTree.prototype.click=function(e)
	{
		with(this){e=e||window.event;
		var elm=e.srcElement||e.target;
		var flg=false;
		if(!e[evtProcessed]&&elm.id&&elm.id.match(/^check-(.*)/))
		{
			var tree=document.getElementById('tree-'+RegExp.$1);
			if(tree)tree.setBoxStates(e,true,false)}
			while(elm)
			{
				if(elm.tagName.match(/^(input|ul)/i)){setLayer();break;}
				if(elm.id&&elm.id.match(/^show-(.*)/))
				{
					var targ=document.getElementById('tree-'+RegExp.$1);
					if(targ.style)
					{
						var col=(targ.style.display=='none');
						targ.style.display=col?'block':'none';
						elm.className=elm.className.replace(col?'plus':'minus',col?'minus':'plus')
						flg=true;
						}
						break
						}
						elm=elm.parentNode
					}
				}
			};
	function setBoxStates(e,routingDown,countOnly)
	{
		with(this)
		{
			if(!this.childNodes)return;
			e=e||window.event;
			var elm=e.srcElement||e.target;
			if(elm&&elm.id&&elm.id.match(/^check-(.*)/)&&!routingDown&&!e[treeObj.evtProcessed])
			{
				var refTree=document.getElementById('tree-'+RegExp.$1);
				if(refTree){
					refTree.setBoxStates(e,true,countOnly);
					e[treeObj.evtProcessed]=true
					}
			}
			var allChecked=true,boxCount=0,subBoxes=null;
			var thisLevel=this.id.match(/^tree-(.*)/)[1];
			var parBox=document.getElementById('check-'+thisLevel);
			for(var li=0;li<childNodes.length;li++)
			{
				for(var tag=0;tag<childNodes[li].childNodes.length;tag++)
				{
					var child=childNodes[li].childNodes[tag];
					if(!child)continue;
					if(child.tagName&&child.type&&child.tagName.match(/^input/i)&&child.type.match(/^checkbox/i))
					{
						if(routingDown&&parBox&&elm&&elm.id&&elm.id.match(/^check-/)&&!countOnly)
						child.checked=parBox.checked;
						allChecked&=child.checked;
						if(child.checked)
						boxCount++
					}
					if(child.tagName&&child.tagName.match(/^ul/i)&&(!e[treeObj.evtProcessed]||routingDown))
					child.setBoxStates(e,true,countOnly)
				}
			}
			if(!routingDown)e[treeObj.evtProcessed]=true;
			if(parBox&&parBox!=elm&&!countOnly)
			parBox.checked=allChecked;
			if(treeObj.countAllLevels)
			{
				boxCount=0;
				var subBoxes=this.getElementsByTagName('input');
				for(var i=0;i<subBoxes.length;i++)
				if(subBoxes[i].checked)
				boxCount++
			}
			var countElm=document.getElementById('count-'+thisLevel);
			if(countElm)
			{
				while(countElm.firstChild)countElm.removeChild(countElm.firstChild);
				if(boxCount)countElm.appendChild(document.createTextNode(treeObj.checkFormat.replace('%n%',boxCount)))
			}
		}	
	};
	//var chtOldOL=window.onload;
//	window.onload=function()
//	{
//		if(chtOldOL)chtOldOL();
//		for(var i in CheckTree.list)
//		CheckTree.list[i].init();
//	};