self.onError=null;
currentX = currentY = 0; 
whichIt = null; 
lastScrollX = 0; lastScrollY = 0;
NS = (document.layers) ? 1 : 0;
IE = (document.all) ? 1: 0;
<!-- STALKER CODE -->

function heartBeat() {
if(IE) { 
    diffY = document.body.scrollTop; 
    diffX = 0; 
}
if(NS) { diffY = self.pageYOffset; diffX = self.pageXOffset; }
if(diffY != lastScrollY) {
    percent = .1 * (diffY - lastScrollY);
    if(percent > 0) 
        percent = Math.ceil(percent);
    else 
        percent = Math.floor(percent);
        
    if(IE) document.all.floater.style.pixelTop += percent;
    if(NS) document.floater.top += percent; 
    
    lastScrollY = lastScrollY + percent;
}
if(diffX != lastScrollX) {
    percent = .1 * (diffX - lastScrollX);
    if(percent > 0) 
        percent = Math.ceil(percent);
    else 
        percent = Math.floor(percent);
    
    if(IE) document.all.floater.style.pixelLeft += percent;
    if(NS) document.floater.top += percent;
    
    lastScrollY = lastScrollY + percent;
} 
window.setTimeout("heartBeat();",40);
} 


<!-- Á¡¼±¾ø¾Ö±â ½ºÅ©¸³Æ® -->
function bluring(){ 
if(event.srcElement.tagName=="A"||event.srcElement.tagName=="IMG") document.body.focus();} 
document.onfocusin=bluring;