Menus show up as transparent

Can someone help me figure out why my pull down menus (buildings, BV Mail) are showing up as being transparent on some of the pages and not the others.

The address is www.bv340.com.

Let me know if I can provide any more information.

Also, it doesn't seem to matter what browser, t开发者_如何学编程hey all do the same thing.

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I don't believe they are showing up as semi-transparent.

This is an issue with your z-index on the menu

Try adding the following to #p7menubar li ul:

#p7menubar li ul {
    z-index: 1;
}