Hi, I'm having a problem with a css menu I used for a friends website.
It looks fine in FireFox but the menu (which is a dropdown menu which should be horizaontal) is to the left side going vertically in Internet Explorer
My friend is quite upset about this as he was very excited about his new website. Can you help me?

It's simpliar to the menu in

http://www.dynamicdrive.com/style/cs...olor-tabs/P10/


and I've used "ddcolortabs"

I'm new to web design and apologise if this is a stupid question.

Any help would be most appreciated as I would like to fix it asap!

Signed fretful Irish bird