Fix Button in button problem with .hittest?

I am trying to make my navigation animate in when the user rolls over it, and out when they roll off. Within this navigation are buttons. When you rollover the navigation it animates in as expected. But then when you rollover a button… the navigation rolls out and disappears. I hear you can’t make buttons in buttons because they conflict with each other.

HERE IS THE EXAMPLE

So… I have tried using the .hittest method to fix. I am fairly new to ActionScripting and can’t figure out what I’m doing wrong. Can anyone enlighten me a bit?

BROKEN NAVIGATION FLA
(with .hittest attempt)

Thanks in advance!