Clock Script Stops Updating When Scrolling Down?

My bad if this was answered somewhere else. I did search the forums but was unable to locate an answer (It is kind of a specific question) I have an odd problem. I have the following clock script:

function Clock()
{
var today=new Date();
var h=today.getHours();
var m=today.getMinutes();
var s=today.getSeconds();

[Code]...

The problem I've run into is this: In Chrome, whenever I scroll down, even by just one tap/click of the down arrow, the clock stops updating the time in, pardon the pun, real-time. But the second I scroll completely to the top of the page, it goes back to counting. I tested in the current (as of Nov 20th 2010) versions of FireFox, Opera and IE9 and the only browser that seems to produce this problem is Chrome.