Depth problem.....I think?

Hey everyone. I have this serious issue with a flash menu I’m trying to make. I have an initial tab movie clip that animates up, another movieclip that fades in within the tab, and then 4 more movieclips that are the links are inside that. So 4 movieclips within a movieclip, within a movieclip. I’m trying to create a “onMouseUp” for each of the 4 menu items but when you click on any of them, it takes you to the same page.

Its hard to explain so if anyone could take a look at my fla and see where I’m going wrong then it would be a huge help to me. The movie clip in question is “about_sections”. The actions are on the first frame of that movieclip to control the menu items.

You can download the .fla here.

Thanks!!