JavaScript code to let users double-click to move back to the top of the page

Here‘s some JavaScript code I found today while poking around the net. Embed this JavaScript code in a web page, and a user can simply double-click anywhere on the page to automatically move back to the beginning of the page. Pretty cool idea. Here‘s the code:

<script language="JavaScript1.2"
           type="text/javascript">
<!--
function dblclick()
{
  window.scrollTo(0,0)
}
if (document.layers)
{
  document.captureEvents(ONDBLCLICK);
}
document.ondblclick=dblclick;
-->
</script>