Question
SpryMenubarHorizontal, a:hover submenus not rendering right in IE

The submenus become visible on a:hover, but are now stacking horizontally, instead of vertically, only in IE (I've checked 7 & 8).
Firefox 3.6.10 renders the submenus on top of each other.

The images below the menus are .SWF's.
OS is Windows XP.
Spry is from CS3:
/* SpryMenuBarHorizontal.css - Revision: Spry Preview Release 1.4 */
/* Copyright (c) 2006. Adobe Systems Incorporated. All rights reserved. */
Does this look familiar to anyone?
