// 2007-8-7
// Aguy
// www.678678.com
//<![CDATA[
function IsChild(cNode,pNode){while(cNode!=null){cNode=cNode.parentNode;if(cNode==pNode) return true; }return false;}

var ajccache=new Object();

function getTBprefixName(str,sta){
	if(str.indexOf("active")!=-1 || str.indexOf("normal")!=-1) str=str.substr(6);
	else if(str.indexOf("over")!=-1) str=str.substr(4);
	else str="";
	return sta+str;
}

function startajaxtabs(){
	for(var i=0;i<arguments.length;i++)
	{
		var ulobj=document.getElementById(arguments[i]);
		ulist=ulobj.getElementsByTagName("li");	
		for(var j=0;j<ulist.length;j++)
		{
			var thelist=ulist[j];
			if(thelist.parentNode.parentNode.parentNode!=ulobj) continue;
			if(thelist.getElementsByTagName("a").length <= 0) continue;
			var ulistlink=thelist.getElementsByTagName("a")[0];
			var ulistlinkurl=ulistlink.getAttribute("urn");
			var ulistlinktarget=ulistlink.getAttribute("rel");
			thelist.setActive=function(bactive){
				if(bactive){this.status="active";this.className=getTBprefixName(this.className,"active");	}
				else{this.status="normal";	this.className=getTBprefixName(this.className,"normal");}
			}
			thelist.LoadTab=function(){
				this.setActive(true);
				this.parentNode.parentNode.parentNode.activetab.setActive(false);
				this.parentNode.parentNode.parentNode.activetab=this;					
				var ulistlink=this.getElementsByTagName("a")[0];
				loadAJAXTab(ulistlink.getAttribute("urn"),ulistlink.getAttribute("rel"));
			}
			
			thelist.onclick=function(aEvent){
				var myEvent = window.event ? window.event : aEvent;
				var fm=myEvent.fromElement;
				if(IsChild(fm,this) || fm==this) return;
				if(this.status=="active") return;
				this.LoadTab();
			}
			if(ulistlinkurl.indexOf("#preloaded")!=-1){
				thelist.setActive(true);
				ulobj.activetab=thelist;
				ajccache[ulistlinkurl]=getElement(ulistlinktarget).innerHTML;
			}else{
				thelist.setActive(false);
			}
		}
		if(ulobj.activetab==null) ulobj.activetab=ulist[0];
	}
}

function getXmlhttp()
{
	var http_request;
	if(window.XMLHttpRequest) { 
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {http_request.overrideMimeType("text/xml");}
	}
	else if (window.ActiveXObject) { 
		try {http_request = new ActiveXObject("Msxml2.XMLHTTP");}
		catch (e) {	try {http_request = new ActiveXObject("Microsoft.XMLHTTP");	} catch (e) {}}
	}
	if (!http_request) { window.alert("can't create XMLHttpRequest object.");return null;	}	
	return http_request;
}

function loadAJAXTab(url,contentid){
	var ocontent=getElement(contentid);
	if(ajccache[url]==null) {
		var xhttp=getXmlhttp();	
		xhttp.onreadystatechange=function(){
			if(xhttp.readyState == 4 && (xhttp.status==200 || window.location.href.indexOf("http")==-1))
			{
				ocontent.innerHTML=xhttp.responseText;
				ajccache[url]=ocontent.innerHTML;
			}
		}
		xhttp.open("GET",url,true);
		xhttp.send(null);
	}
	else{ocontent.innerHTML=ajccache[url];}
}

function getElement(aID){return (document.getElementById) ? document.getElementById(aID): document.all[aID];}

//]]>