hitTest help

I am trying to build a box with a couple buttons in it.
when the user rolls over the box i want it to move _y -50 pixels, then roll out _y 50 I am also use lacos tweens. Why I am using a hitTest is cause if i just put a button in the background of the box then when the user hits the buttons that are in the box it would not work.

setup box>buttons

hope this make sense.