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 = 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.scroll_banner.style.pixelTop += percent;
        if(NS) document.scroll_banner.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.scroll_banner.style.pixelLeft += percent;
        if(NS) document.scroll_banner.top += percent;
        lastScrollY = lastScrollY + percent;
       }
   }
 if(NS || IE) action = window.setInterval("heartBeat()",1);