Stupid Problem With Movieclips

Hello boys & girls…
Well, I have a button that shows 2 movieclips.
These movieclips are used as options for the interface.
It’s driving me crazy because only one of the two buttons
changes its state (on/off).If you put them in seperate layers,
only the upper layer works…
Can some help me plz???
I have the fla movie attached…

Thanks in advance!