//ÓұߵĻ¬¶¯°´Å¥
suspendcode="<DIV id=backi style='right:6px;POSITION:absolute;TOP:550px;'><a href='javascript:history.back()' title='ºóÍË'><img border=0 src=\"../images/uw.gif\" ></a><br></div>" 
document.write(suspendcode); 
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.backi.style.pixelTop+=percent; 
lastScrollY=lastScrollY+percent; 
} 
window.setInterval("heartBeat()",1); 



//Ë«»÷¹öÆÁ
var currentpos,timer;
function initialize()
{
//timer=setInterval ("scrollwindow ()",16);
}
function sc()
{
clearInterval(timer);
}
function scrollwindow()
{
currentpos=document.body.scrollTop;
window.scroll(0,++currentpos);
if (currentpos !=document.body.scrollTop)
sc();
}
document.onmousedown=sc
document.ondblclick=initialize