EEKK!!! I found another problem.

I hope I am not too annoying. My site layout is pretty much set, but I am working to test and find problems right now. So, I am full of problems.
Here's the issue:
With Apple Zen, in IE7, if you activate a submenu under "Categories" and then move your mouse to the webpage from the submenu, when you hover over Categories again, you will get a blank part where the submenus were before. Attached is a screenshot from Jettrue's webpage that shows the problem. Any idea how to fix that?
By the way, I am more than happy to make a contribution, Jettrue. Your template is essential for my site, and I certainly appreciate all the effort you have put into it and giving advice on this thread. Is there any way I can do so?
Thanks!
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