Prematurely disappearing menu (FF)

This page’s menu works fine in bug-allowed IE but disappears prematurely in FireFox. It ‘seems’ that the menu will stay open until you have the ‘overflow:auto’ text underneath your mouse.

http://www.voipinbusiness.co.uk/issueone.asp

Any suggestions? I didn’t realize this was what was happening and took the time to create an entire new menu based in css… which does the same thing…

[edit]I have found a solution (see below) but it prevents me from internally scrolling so any suggestions are very welcome.[/edit]

~ Lacuna :love: