problem with CSS navigation menu in IE

[der kommissar]

Hi all

I'm having a small problem with a navigation menu on a site i'm doing.
The address of the site is:

http://www.statik.be/radiomol/

All works perfectly fine in FireFox, Opera and Safari, but IE behaves
differently:

- the breadcrumb trail jumps down as the menu appears and jumps back
when it disappears;
- if the mouse moves over a menu item, the menu pops out. but if you
move the mouse over the menu that just popped out, it disappears again
unless you move the mouse between menu items (this is a bit hard to
explain, but easy to see if you try)

I already had to use a javascript workaround because IE doesn't
understand the 'hover' pseudoclass on anything but a-elements.

So I'm really stuck. Can anyone give me a hint on how to solve that problem?

Thanks in advance!

DK