function showSub(obj)
{
	
	obj.className=obj.className+' hover';
	//alert(obj.className);
}
function hiddenSub(obj)
{
	if(obj.className.indexOf(' hover')!=-1)
	{
		obj.className=obj.className.substring(0,obj.className.indexOf(' hover'));
	}
}

function initAd() {
	document.all.AdLayer.style.posTop = -200;//设置onLoad事件激发以后，广告层相对于固定后的y方向位置
	document.all.AdLayer.style.visibility = 'visible'//设置层为可见
	MoveLayer('AdLayer');//调用函数MoveLayer()
}
function MoveLayer(layerName) {
	var x = 600;//浮动广告层固定于浏览器的x方向位置
	var y = 300;//浮动广告层固定于浏览器的y方向位置
	var diff = (document.body.scrollTop + y - document.all.AdLayer.style.posTop)*.40;
	var y = document.body.scrollTop + y - diff;
	eval("document.all." + layerName + ".style.posTop = y");
	eval("document.all." + layerName + ".style.posLeft = x");//移动广告层
	setTimeout("MoveLayer('AdLayer');", 20);//设置20毫秒后再调用函数MoveLayer()
}
function setContent()
{
	
	var wh=windowHeight();
	document.getElementById("contentDiv").style.height = (wh-248)+"px";
}


function windowHeight() {
    var de = document.documentElement;
    return self.innerHeight||(de && de.clientHeight)||document.body.clientHeight;
}

function changeImg(imgId,imgSrc)
{
	var tarImg = document.getElementById(imgId);
	tarImg.src=''+imgSrc+'';
}