var 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*/} 
 percent=.1*(diffY-lastScrollY);  
if(percent>0)percent=Math.ceil(percent);
 else percent=Math.floor(percent);
 document.getElementById("adleft").style.top=parseInt(document.getElementById("adleft").style.top)+percent+"px";  
 document.getElementById("adright").style.top=parseInt(document.getElementById("adright").style.top)+percent+"px";  
   lastScrollY=lastScrollY+percent;     
} 
function adhide(names){document.getElementById(names).style.display='none';} 
function screencl(names){if(screen.width<=800){adhide(names);}}  
 zcode="<div id='adleft' style='left:6px;position: absolute;z-index:1;top:72px;'><div style='width:100px;height:300px;background:#ccc;border:#999 solid 1px;'><a href='../bjp/index.asp'><img src='img/ad1.gif' width='100' height='300' border='0'></a></div><div align='right' style='background:#fff;font-size:0px;'>¡¡<img src='images/close.gif' title='¹Ø±Õ' onclick=adhide('adleft') style='cursor:pointer'></div></div>";
ycode="<div id='adright' style='right:6px;position: absolute;z-index:1;top:72px;'><div style='width:100px;height:300px;background:#ccc;border:#999 solid 1px;'><img src='img/ad2.gif' width='100' height='300' border='0'></div><div align='left' style='background:#fff;font-size:0px;'>¡¡<img src='images/close.gif' title='¹Ø±Õ' onclick=adhide('adright') style='cursor:pointer'></div></div>";  
 document.write(zcode);
 document.write(ycode); 
 screencl('adleft'); 
 screencl('adright'); 
 window.setInterval("heartBeat()",1);