Level interaction question

Hi all. I have a flash site where I load in movies on top of a main movie. The main movie is on level 0 obviously and my content movies load on top of that on level 1. I just noticed that once I’ve clicked on a content movie to load in level 1, My mouse still tries to interact with the base movie clip. I don’t want this to happen. My question is: how do I disable the buttons on the base mc on level 0 while a content mc is loaded on level 1? I have seen this done before, where the backround fades out for example while a certain mc is loaded and active. How would I go about doing something like this? Thanks for any advice!

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