Menu items vanish in IE8

[bigsilk]

Here's the page:
http://www.frartexchange.com/gallery.html

And here's what's happening:

When you mouse over 'What may we show you?' a list of menu items cascade down. The first menu item offers color schemes, and they all work fine. You can see the other menu items below 'color schemes' just fine, as well. When you mouse over the other three, still no problem: The menu items appear. But here's where it gets weird... When you mouse over the submenu items past that, 'sizes,' mediums,' and 'subject matter,' the top choices disappear as you mouse over them, but the bottom one stays visible.

It works fine in FF, Safari and Chrome. It does some weird stuff in Opera, too... Submenu items seem to occupy a single space or are displaying vertically and on top of each other. I'm not too concerned about Opera as it's got a pretty small market share of browser use, but it would be nice to have it work.

Anyone? Anyone?

Thanks,
Adam

[V]

Sorry for the extremely late response, but I was unable to visit the forum in the last weeks. Now, I tested the menu but it all works here in 2 different boxes with IE8... I suppose you fixed the problem meanwhile?