<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/ TR/html4/strict.dtd">
<script type="text/javascript" src="jquery-1.3.2.min.js"></script> $('.item').click(function(){ $('#slider').animate({ // this element is inside another DIV that has CSS overflow:hidden; top: '-200px' },1200); } In FF3, this causes a jaggedy sliding of the elements, very ugly. Looks like the elements are literally jumping up and down while sliding. Not a problem in IE7, though... Has anyone else seen this?