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.lovexin12.style.pixelTop+=percent;
document.all.lovexin14.style.pixelTop+=percent;
lastScrollY=lastScrollY+percent; 
} 
suspendcode12="<DIV id=lovexin12 style='left:2px;POSITION:absolute;TOP:140px;'><img src='http://www.zwu.edu.cn/images/sjlogo.gif' border=0 width='100' height='100'></div>"
document.write(suspendcode12); 
suspendcode14="<DIV id=lovexin14></DIV>"
document.write(suspendcode14); 
window.setInterval("heartBeat()",1);