Anybody Know How To...

anybody know how to fix problem. two movie clips in the their own layers are active over eachother. if i open movie clip "layer1" and than i open the movie clip "layer2" the muvie clip #1 react same like if si open by it self. for example: movie clip1 include some buttons, movie clip2 doesn't, but if i open movie clip2 over movie clip1, mouse react on the buttons in movie clip1.hard to explain. but i appreciate any comments thanx