Multi zone stage, zoom in, and load external movie

Here’s my idea: I’d like to have my main stage divided into four quadrants. Each quadrant would be basically a large button:

A | B

C | D

What I want to do is have the main movie zoom in to each quadrant when a user clicks on that button so that the clicked quadrant takes up the whole stage:


| A |
|__|

When the main stage zooms into this quadrant, I want to load an external movie into the top level. Then, when a user is done with that external movie, I want them to be able to click a button that will unload that new movie and zoom back out to the original view within the parent movie:

A | B

C | D

Does this make sense and does anybody have any suggestions?