How to randomize a button play?

programming flash
1

Hello all, I am new to flash and seem to be stuck with this problem. Any guidance would be extremely appreciated.

1 button. 3 animations (red, green, blue) on different layers at different frames (80, 100, 115) in the timeline.

How do I get the button to goto and play one of the random animations when pressed?

Thanks,

Again, any guidance would be extremely appreciated.