Display problems with Jim's DHTML Menu V5.7

[PLove]

1) Script Title: Jim's DHTML Menu V5.7

2) Script URL (on DD): http://www.dynamicdrive.com/dynamici...menu/index.htm

3) Describe problem: I'm working in RoboHelp 7 and this script/menu is perfect for lengthy topics. However, when I test pages in FireFox or Opera, the horizontal & vertical menu's sub-menus expand 'upward' instead of dropping down. The bottom of the sub-menu is just barely visible at the top of the browser. Is there a problem with the script, browser settings or using it in RoboHelp docs?

Attached is a .zip file containing the config.js files and two (2) .txt files that I'm using with the script. Both topics display the sub-menus above the main menu instead of down or horizontally. Please let me know if you need additional info. Thanks!!

[aliceaod]

It displays ok for me in firefox and ie, but is totally borked in Chrome (even the one on the DD site is borked so I know it's not just me). I'll be using something else......