// AJAX Tab
// update 2006.10.18
// 增加鼠标延迟感应特性。
// update 2006.10.8
// A 标签 href 属性将保持原有HTML功能。增加urn属性为AJAX Load 路径。
// update 2006.10.11
// 修正IE5.0 undefined 未定义错误，增加脚本错误屏蔽
var Browser = new Object();
Browser.isMozilla = (typeof document.implementation != 'undefined') && (typeof document.implementation.createDocument != 'undefined') && (typeof HTMLDocument!='undefined');
Browser.isIE = window.ActiveXObject ? true : false;
Browser.isFirefox = (navigator.userAgent.toLowerCase().indexOf("firefox")!=-1);
Browser.isOpera = (navigator.userAgent.toLowerCase().indexOf("opera")!=-1);
if (Browser.isFirefox) { // entend Event Mod for FireFox
    extendEventObject();
}
function extendEventObject() {
    Event.prototype.__defineGetter__("srcElement", function () {
        var node = this.target;
        while (node.nodeType != 1) node = node.parentNode;
        return node;
    });

    Event.prototype.__defineGetter__("fromElement", function () {
        var node;
        if (this.type == "mouseover")
        node = this.relatedTarget;
        else if (this.type == "mouseout")
        node = this.target;
        if (!node) return;
        while (node.nodeType != 1) node = node.parentNode;
        return node;
    });

    Event.prototype.__defineGetter__("toElement", function () {
        var node;
        if (this.type == "mouseout")
        node = this.relatedTarget;
        else if (this.type == "mouseover")
        node = this.target;
        if (!node) return;
        while (node.nodeType != 1) node = node.parentNode;
        return node;
    });
}
function IsChild(cNode,pNode){
    while(cNode!=null){
        cNode=cNode.parentNode;
        if(cNode==pNode) return true;
    }
    return false;
}

var ajccache=new Object();
var waitInterval;
var tempref;
var MouseDelayTime=150;//鼠标感应延迟300毫秒
//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;
//}
var topary = new Array("top1");
function startajaxtabs(){
    for(var i=0;i<arguments.length;i++)
    {
        var ulobj=document.getElementById(arguments[i]);
        ulist=ulobj.getElementsByTagName("div");
        for(var j=0;j<ulist.length;j++)
        {
            var thelist=ulist[j];
            if(thelist.parentNode!=ulobj) continue;//只有第一层li有效 fixed 2006.9.29
            var ulistlink=thelist.getElementsByTagName("a")[0];
            var ulistlinkurl=ulistlink.getAttribute("urn");
            var ulistlinktarget=ulistlink.getAttribute("rel");
            thelist.setActive=function(bactive){
                if(bactive){
//                    alert(this.id);
                    this.status="active";
                    this.className="rt_pic";
                    this.getElementsByTagName("a")[0].className="a_hei12";
//                    if(this.id=="top1" || this.id=="top2" ||this.id=="top3"){
//                        this.className="active";
//                        for(var i=0;i<topary.length;i++){
//                            if(this.id==topary[i]){
//                                this.getElementsByTagName("a")[0].className="a_bai12";
//                            }else{
//                                 this.className="normal";
//                            }
//                        }
//                        
//                    }
                }else{
                    this.status="normal";
                    this.className="w11";
                    this.getElementsByTagName("a")[0].className="a_bai12";
//                    if(this.id=="top1" || this.id=="top2" ||this.id=="top3"){
//                        this.getElementsByTagName("a")[0].className="a_hei12";
//                        this.className="normal";
//                    }
                }
            }
            thelist.LoadTab=function(){
                this.setActive(true);
                this.parentNode.activetab.setActive(false);
                this.parentNode.activetab=this;
                var ulistlink=this.getElementsByTagName("a")[0];

                loadAJAXTab(ulistlink.getAttribute("urn"),ulistlink.getAttribute("rel"));
            }
            thelist.onmouseover=function(aEvent){
                var myEvent = window.event ? window.event : aEvent;
                var fm=myEvent.fromElement;
                if(IsChild(fm,this) || fm==this) return;//过滤子元素event
                if(this.status=="active") return;
                tempref=this;
                clearTimeout(waitInterval);
                waitInterval=window.setTimeout("tempref.LoadTab();",MouseDelayTime);
            }

            thelist.onmouseout=function(aEvent){
                var myEvent = window.event ? window.event : aEvent;
                var em=myEvent.toElement;
                if(IsChild(em,this) || em==this) return; //过滤子元素event
                if(this.status=="active") return;
                clearTimeout(waitInterval);
            }

            if(ulistlinkurl.indexOf("#default")!=-1){

                thelist.setActive(true);
                ulobj.activetab=thelist;
                ajccache[ulistlinkurl]=document.getElementById(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=document.getElementById(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+"?rand="+Math.random(),true);
        xhttp.send(null);
    }else{

        ocontent.innerHTML=ajccache[url];
    }
}
window.onerror=function(){return true}