Hi all. I was wondering if there was anyone out there who could assist me with a slight issue I'm having?

After much testing and searching we managed to find a menu that was quite fast in loading the data. Basically we are using a menu adapted from http://www.seoconsultants.com/css/menus/tutorial/

Now this works fine in all browsers, however after applying our code it doesn't seem to work in any browser other than IE. What we really need is for it to work in all browsers, which the original does!

Here is link to the menu http://demo.glensoft.net/index.html.
I just can't seem to see what exactly is going wrong...please can anyone help?

Many thanks in advance!