self.onError=null;
currentX = 761;
currentY = 249;  
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.rb.style.pixelTop += percent;
		if(NS) document.rb.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.rb.style.pixelLeft += percent;
		if(NS) document.rb.top += percent;
		lastScrollY = lastScrollY + percent;
	}	
}	
if(NS || IE) action = window.setInterval("heartBeat()",1);