Help with Menu using complex rollover

1

I am creating a site which shows a scene. Each button zooms in on button on rollover. These work individually. I have each zoom animation as a movieclip each referencing rollover and rollout functions of buttons on the root timeline. On the main timeline I have each animation on a different frame. On rollover I have each button change to the corresponding frame. It works but when it rolls over it only changes the frame. I have to rollover again on same button to play the zoom animation. Any suggestions to have the animation play on frame load?