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) { 
		if (!document.body) {
			return;
		}
		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);
	//document.title = percent+" : "+document.all.floater.style.pixelTop;
		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;
	} 
} 
if(NS || IE) action = window.setInterval("heartBeat()",1);