var ytop = 455;//浮动层开始浮动时距离顶端位置的初始值
var ybottom= 155;//浮动层结束浮动时距离底边位置
var scrollPos;
var oldHeight = 0;
function MoveLayer() {
	
	if (typeof window.pageYOffset != 'undefined') {
	   scrollPos = window.pageYOffset;
	}
	else if (typeof document.compatMode != 'undefined' && document.compatMode != 'BackCompat') {
	   scrollPos = document.documentElement.scrollTop;
	}
	else if (typeof document.body != 'undefined') {
	   scrollPos = document.body.scrollTop;
	}
	var bodyheight = document.body.scrollHeight;
	var layerheight = document.getElementById("fdlayer").height || document.getElementById("fdlayer").scrollHeight;
	bodyheight = Number(bodyheight);
	layerheight = Number(layerheight);
	scrollPos = Number(scrollPos);
	if(scrollPos<(bodyheight-layerheight-ybottom) & scrollPos>ytop){
		document.getElementById("fdlayer").style.top = scrollPos+"px";
	}
	if(scrollPos<=ytop){
		document.getElementById("fdlayer").style.top = ytop+"px"; 
	}
	if(scrollPos>=bodyheight-layerheight-ybottom && bodyheight-layerheight-ybottom > 0){
		document.getElementById("fdlayer").style.top = bodyheight-layerheight-ybottom+"px"; 
	}

	if(typeof document.getElementById("left") != 'undefined'){
		var mainheight=document.getElementById("left").height || document.getElementById("left").scrollHeight;
		var maintop=get_Top(document.getElementById("left"));
			//alert((mainheight + maintop) +"-" +(layerheight + ytop));
		if((Number(mainheight) + maintop) < (layerheight + ytop)){
			
		   
			
			var tempheight= layerheight + ytop - maintop;
			
			if(tempheight<735) {
				tempheight=735;
			}
			document.getElementById("left").style.height = tempheight + "px";
		    document.getElementById("left").style.minHeight = tempheight + "px";
			oldHeight = layerheight + ytop;
		}
		else if(!document.getElementById("left").style.height || document.getElementById("left").style.height == 'auto')
		{
			document.getElementById("left").style.height = mainheight + "px";
		}
		//else if(oldHeight != 0 && oldHeight != layerheight + ytop && !_sub_menu_slide_downing)
		//{
		//	document.getElementById("left").style.height = layerheight + ytop - maintop + "px";
		//	document.getElementById("left").style.minHeight = layerheight + ytop - maintop + "px";
		//	oldHeight = layerheight + ytop;
		//}
	}

	setTimeout("MoveLayer();", 20);//设置20毫秒后再调用函数MoveLayer() 
}

function getfdlayertop(){

	var browser=navigator.appName 
    var b_version=navigator.appVersion 
    var version=b_version.split(";"); 
    var trim_Version=version[1].replace(/[ ]/g,""); 
   if(browser=="Microsoft Internet Explorer" && trim_Version=="MSIE6.0") 
   { 
     if(jQuery("#report_but")) {
	 jQuery("#report_but").attr('src','images/report_but.gif');

	 }

   } 

  
	ytop =document.getElementById("fdlayer").offsetTop;
	MoveLayer();
	jQuery("#DivCity").bind("mouseover",ShowDivCity);
	jQuery("#DivCity").bind("mouseout",HiddenDivCity);
	jQuery("#DivCityFm").bind("mouseover",ShowDivCity);
	jQuery("#DivCityFm").bind("mouseout",HiddenDivCity);
	
	
}

window.onload=getfdlayertop;

function get_Top(e){
	var offset=e.offsetTop;
	if(e.offsetParent!=null){
		offset+=get_Top(e.offsetParent);
	}
	return offset;
}


/*
//获取元素的纵坐标

//不影响原有的onload在页面中增加onload
function addOnload_Event(fnc)
{
	if(typeofwindow.addEventListener!="undefined")
	window.addEventListener("load",fnc,false);	
	else if(typeofwindow.attachEvent!="undefined")
	{
		window.attachEvent("onload",fnc);		
	}
	else 
	{
		if(window.onload!=null)
		{
			var oldOnload=window.onload;
			window.onload=function (e){
				oldOnload(e);				
				window[fnc]();				
			};			
		}
		else 
		window.onload=fnc;		
	}
}

//获取元素的横坐标
function getLeft(e){
	var offset=e.offsetLeft;
	if(e.offsetParent!=null){
		offset+=getLeft(e.offsetParent);
	}
	return offset;
}
function resizefade(){
	var avalHeight=document.documentElement.clientHeight || document.body.clientHeight;
	var avalWidth=document.documentElement.clientWidth || document.body.clientWidth;
	if(avalHeight<document.body.scrollHeight){
		document.getElementById("fade").style.height=document.body.scrollHeight+10+"px";
	}else{
		document.getElementById("fade").style.height=avalHeight+"px";
	}
	if(avalWidth<1000){
		document.getElementById("fade").style.width="1000px";
	}
	else{
		document.getElementById("fade").style.width=avalWidth+"px";
	}
}
function showlayer(proid){
	document.getElementById("centerframe").src="reg1.html";
	document.getElementById("light").style.display='block';
	document.getElementById("fade").style.display='block';
}
function hidelayer(){
	document.getElementById("light").style.display='none';
	document.getElementById("fade").style.display='none';
}

window.onresize=resizefade;
*/
  

  
function ShowDivCity()
{
    document.getElementById("DivCity").style.display= "block";
}

function HiddenDivCity()
{
    document.getElementById("DivCity").style.display = "none";
}