Attaching buttons to movieclips - ideas

Please visit this page, and roll over a few areas to make an idea of what I need…

There are 20 areas on the map, that when rolled over will “emphasize” by dynamically adjusting scale and alpha. This works quite nicely, but now I need to add buttons to each of them. There would be 2 buttons for most of them, while North America would have more. I would NOT want to go into each mc on the stage and edit it manually by placing buttons in each of those timelines, instead I’m thinking of attaching a button from the Library using attachMovie. However this has a down side, in that I can’t make them clickable without problems - the buttons will have to stand outside some areas because they aren’t big enough, and hovering these buttons will activate the onRollOut on the area…

For any suggestions, please, speak up