Playing movie clips in reverse order?

Hi all…

Is it possible to play frames of a movie clip in reverse?

I have a button inside a MC named ANIM that tells it to goto frame 5 and play… so it plays 5-10. On frame 11 there is a back button… is it possible to play frames 10-5 to get a reverse animation? If so… how?

I think to play in the proper order my button should say:

on (release) {

Frame 10 has a stop action. So when I get to frame 11 with the back button what code should I put on there?