lastScrollY=0; 

function heartBeat(){ 
	diffY=document.body.scrollTop; 
	percent=.1*(diffY-lastScrollY); 
	if(percent>0)percent=Math.ceil(percent); 
	else percent=Math.floor(percent); 
	document.all.lovexin5.style.pixelTop+=percent;
 
	lastScrollY=lastScrollY+percent; 
} 

suspendcode5="<div id=lovexin5 style='right:10px;POSITION:absolute;TOP:100px;'><a href='http://www.yaujai.com/' target='_blank'><img src='/ad1-1533.jpg' width='175' height='80' border=0 alt=''></a></div>"
document.write(suspendcode5); 

window.setInterval("heartBeat()",1);