lastScrollY=0;
function doublefloat(){ 
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("doublefloat_left").style.top=parseInt(document.getElementById("doublefloat_left").style.top)+percent+"px";
document.getElementById("doublefloat_right").style.top=parseInt(document.getElementById("doublefloat_left").style.top)+percent+"px";
lastScrollY=lastScrollY+percent; 
//alert(lastScrollY);
}
suspendcode_left="<DIV id=\"doublefloat_left\" style='left:10px;POSITION:absolute;TOP:100px;'><a href='http://www.bjlsk.com' target='_blank'><img border=0 src=/Templets/images/left.gif width=90 height=250></a></div>"
suspendcode_right="<DIV id=\"doublefloat_right\" style='right:10px;POSITION:absolute;TOP:100px;'><a href='http://www.bjlsk.com' target='_blank'><img border=0 src=/Templets/images/right.gif width=90 height=250></a></div>"

document.write(suspendcode_left); 
document.write(suspendcode_right); 
window.setInterval("doublefloat()",1);