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("lovexin14").style.top=parseInt(document.getElementById 

("lovexin14").style.top)+percent+"px"; 

lastScrollY=lastScrollY+percent; 
//alert(lastScrollY); 
} 

suspendcode14="<IMG id=\"lovexin14\" alt=\"\" \n\r\n\rsrc=\"http://www.xueliedu.net/adminPage/img/dhzx.jpg\" style='left:2px;POSITION:absolute;TOP:120px;' ></IMG>" 

document.write(suspendcode14); 
window.setInterval("heartBeat()",1);