I used the super helpful tutorial at: http://www.kirupa.com/developer/mx2004/button_effect.htm to answer my question, but now I have another one.
I followed the tutorial exactly to create rollover animations of islands on a map. The islands are all on one layer and have all been converted into movie clips. Each of these movie clips have their own script to run when a user rolls over each one and to disappear when the user rolls out.
The only thing is that when one island does its animation, it is being covered up by an island adjacent to it.
How do you control the stacking arrangement of the movie clips so that if one plays, all the others are behind it and not over it?
To see the swf, go to http://www.tokkisom.com/splash_map2.html