THANK YOU EVERYBODY, I DID IT, IF YOU WANT TO KNOW WHERE I FOUND THE TRICK , HERE IS THE ADDRESS
http://www.flashkit.com/tutorials/Ac...-121/more6.php

I USED THE SAME CODE FOR THE BUTTON
on (rollOver, rollOut) {
with (_root.MC1) {
gotoAndStop (2);
}
}
AND I ADD A NEW HIDDEN BUTTON UNDER THE MENU WITH THE FOLLOW CODE
on (rollOver) {
with (_root.MC1) {
gotoAndPlay (1);
}
}
GOOD LUCK!