Navigation Help

Hey, Can anyone take a look at my flash navigation and tell me why i cant trigger all my onRelease actions for my nav all at once on the main timeline?

I have gotten it to work if i put the nav functions inside the movieclip my buttons are in but i cant make it work from the _root timeline… It will make sence if you see my file.

www.industrialbrand.com/hidden/navigation.fla

Much Thanks!