两端悬停广告

<script language="javascript">
//定义左联图片的所在位置及其链接目标的地址
var leftsrc = "http://www.abc.com/left.jpg";
var leftlink = "http://www.abc.com/";
//定义右联图片的所在位置及其链接目标的地址
var rightsrc =  "http://www.abc.com//right.jpg";
var rightlink = "http://www.abc.com/";
//定义“关闭”按钮图片的所在位置
var closesrc ="http://www.abc.com/close.gif";

///////////////////////////
////  以下代码无需改动  ////
//////////////////////////
 

lastScrollY=0;

function heartBeat(){
var diffY;
if (document.documentElement && document.documentElement.scrollTop)
 diffY = document.documentElement.scrollTop;
else if (document.body)
 diffY = document.body.scrollTop
else
 {/*Netscape stuff*/}
//alert(diffY);
percent=.1*(diffY-lastScrollY);
if(percent>0)percent=Math.ceil(percent);
else percent=Math.floor(percent);
document.getElementById("lovexin12").style.top=parseInt(document.getElementById
("lovexin12").style.top)+percent+"px";
document.getElementById("lovexin14").style.top=parseInt(document.getElementById("lovexin14").style.top)+percent+"px";
lastScrollY=lastScrollY+percent;
//alert(lastScrollY);
} 
suspendcode12="<div id=/"lovexin12/" style='left:2px;position:absolute;top:500px; cursor:pointer;'><div onclick=javascript:window.open(/"" + leftlink + "/")><img src=/"" + leftsrc +"/" /></div><div onclick=/"document.getElementById('lovexin12').style.display = 'none'; document.getElementById('lovexin12').style.display = 'none';/" style='text-align:center;'><img src=/"" + closesrc +"/" /></div></div>"
suspendcode14="<div id=/"lovexin14/" style='right:2px;position:absolute;top:500px; cursor:pointer;'><div onclick=javascript:window.open(/"" + rightlink + "/")><img src=/"" + rightsrc +"/" /></div><div onclick=/"document.getElementById('lovexin12').style.display = 'none'; document.getElementById('lovexin14').style.display = 'none';/" style='text-align:center;'><img src=/"" + closesrc +"/" /></div></div>"
document.write(suspendcode12);
document.write(suspendcode14);
 
window.setInterval("heartBeat()",1);
</script>