External loaded swfs and disable buttons

hi, this is my situation: i have a main movie that loads external movies in levels (1, 2, 3…8) So, the movies load fine, but cos they are “OVER” the main movie, the buttons that are on the main movie still works -and i dont wan to-
so, there is a way to disable main movie´s buttons when one is clicked so the loaded movie in level 1 have his own buttons, and then, when the button in level 1 that backs to main movie the main movie buttons are enabled again?
sorry if a mess up my explanation.
any help will be welcomed.