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;
  }
}
if(NS || IE) action = window.setInterval("heartBeat()",1);