self.onError=null; 
 currentX = currentY = 0; 
 whichIt = null; 
 lastScrollX = 0; lastScrollY = 0; 
 action = window.setInterval('heartBeat()',1); 
  
 function heartBeat() { 
  diffY = document.body.scrollTop; 
  diffX = 0; 
  if (diffY != lastScrollY) { 
  percent = .2 * (diffY - lastScrollY); 
  if (percent > 0) { 
    percent = Math.ceil(percent); 
  } else { 
    percent = Math.floor(percent); 
  } 
  document.all.layer_right.style.pixelTop += percent; 
  lastScrollY = lastScrollY + percent; 
  } 
  if (diffX != lastScrollX) { 
  percent = .2 * (diffX - lastScrollX); 
  if (percent > 0) { 
    percent = Math.ceil(percent); 
  } else { 
    percent = Math.floor(percent); 
  } 
  document.all.layer_right.style.pixelLeft += percent; 
  lastScrollY = lastScrollY + percent; 
  } 
 }