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)+10;  
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); 
} 
suspendcode12="<DIV id=\"lovexin12\" style='Z-INDEX: 99;left:1px;POSITION:absolute;TOP:1px;'></div>" 
suspendcode14="<DIV id=\"lovexin14\" style='right:1px;POSITION:absolute;'><a href=\'front/ContMeServlet\' target=\'_blank\'><img border=0 src=front/images/float_mess.jpg></div>" 
document.write(suspendcode12);  
document.write(suspendcode14);  
window.setInterval("heartBeat()",1);