function initAd(left,top) {
document.all.AdLayer.style.posTop = -10;//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',left,top);//调用函数MoveLayer()
}
function MoveLayer(layerName,left,top) {
var x = left;//浮动广告层固定于浏览器的x方向位置
var y = top;//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',"+left+","+top+");", 100);//设置20毫秒后再调用函数MoveLayer()
}
	
document.write("<div id=AdLayer style='position:absolute; width:61px; height:59px; z-index:20; visibility:hidden;; left: 600px; top: 300px'> <a href=http://cmecexpo.com/info/content.asp?infoId=854 target=_blank onclick=javascript:window.open('../ad/include/adcount.asp?adId=92','','width=0,height=0')><img id=imgId src=../manage/uploadfiles/ad1_2009730102520656.gif border=0></a></div>");
initAd(0,100);//载入页面后，调用函数initAd()