흐르는 TOP 버튼

<!-- 흐르는 TOP 버튼 : 2008. 07. 24 -->
<div id="floater" style="position:absolute; left:1000px; top:500px; width:11px; height:20px; z-index:1">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td><a href="#">TOP</a></td>
</tr>
</table>
</div>
<!-- 흐르는 TOP 버튼 끝 -->




<!-- 흐르는 TOP 버튼 스크립트 : 2008. 07. 24 -->
<script language="JavaScript">
<!--
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);
//-->
</script>
<!-- 흐르는 TOP 버튼 스크립트 끝 -->