Menu not working in IE

In IE9 I don't have any sub menus. They are not working.

When I put the IE browser in IE8 mode or IE7 mode I still do not have any sub menus. They aren't working for me.

I really like this little menu but I need it to be working. Thank you for your help!

ok
so please test with another template and tell me

I have the default template activated now and it still has the same problem. Please look. Thank you!

as the problem only occured on Ie it's diffcult for me to help.
you have some changes in the default theme, could you please switch to the default2 or copy/paste the orignal default on another name and test.
Thx

I did not make any modifications to the default template I was using before, which was Beez2. I have now changed to the Beez5 default template, which I did not modify. The sub menus still do not appear in IE browser. Clearing the browser cache does not help.

I've just tested on IE9, beez20 and the default theme, it works ...