self.onError=null;

currentX = currentY = 0;  
whichIt = null;           
lastScrollX = 0; lastScrollY = 0;

NS = (document.layers) ? 1 : 0;
IE = (document.all) ? 1 : 0;

function heartBeat() {

  if(IE) { diffY = document.body.scrollTop; diffX = document.body.scrollLeft; }
  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.left += percent;
    lastScrollX = lastScrollX + percent;
  }       
}

if(NS || IE) action = window.setInterval("heartBeat()",50);