Ok here's the link, try to view it with firefox, it works perfectly fine for me.
http://www.videoxone.com/Menu/PlainRound.html
The only explanation I might have is that you are running a linux server, and that is case sensitive, which means the code is refering to the same link but with different uppercase/lowercase. For example: If you type:
http://www.videoxone.com/menu/PlainRound.html you will get a 404 error (lower case "m"). I am not sure this is true, either that or something else is messed up.
Again: menumaker is not the problem here it uses plain javascript which is all browsers compatible.
EDIT: Download I-explorer 7 it has a firefox-like settings so it won't make any problems.
My opinion: Solve the problem the most
effecient way not the hardest way. There is no "correct" approach, there is a working and not working approach. Your company's website does not sell stuff, so it does not have to attract clients. It would be easier and more cost effective to just type "compatible with internet explorer only" than to waste time (which is money) and find the problem. Installing Internet explorer 7 will solve the problem along with reteining the firefox experience (using tabs). I think it is more effective - does not require any changes and saves you/the project engineer the headache.
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