Problem with complicated menu

I have a problem, actually more problems with a complicated flash menu that I am trying to build. Please help. Here is the source. The code is pretty complex. Test it several times and notice the weird things that happen. Sometimes the cursor goes crazy and changes between the arrow cursor and hand cursor while on the same mc (used as a button), sometimes the out animation begins while the cursor is still on the button and other weird things. I have looked through the code but didn’t found the problem. But considering the coplexity of it, I might have missed it.