<style>
#lovexin12,#lovexin14{
width:92px;
border:1px solid #ddd;
}
</style>
<DIV id="lovexin12" style='left:2px;POSITION:absolute;TOP:120px;'>左侧</div>
<DIV id="lovexin14" style='right:2px;POSITION:absolute;TOP:120px;'>右侧</div>
<script language="JavaScript" type="text/javascript">
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
("lovexin12").style.top)+percent+"px";
lastScrollY=lastScrollY+percent;
//alert(lastScrollY);
}
window.setInterval("heartBeat()",1);
</script>
