MOUSEOVER BUTTON TO PLAY MOVIECLIP FORWARD AND IN REVERSE ON MOUSEOUT

How do I make a button that plays a movie clip forward on mouseover and play in reverse on mouseout?

I'm doing this wrong currently, but its the action I want my button to do.  Currently I am using this code on a movieclip symbol:

onClipEvent (enterFrame) { // runs a hit test
 if (this.hitTest(_root._xmouse, _root._ymouse, true)) {
   this.nextFrame(); // if true the movieclip plays forward
 } else {
   this.prevFrame(); // if not plays backwards to beginning
 }
}

In the movieclip I have my animation and a stop(); on the first frame.

I also have a button in the movieclip that has the click area that I want to use and this code:

on (release) {
   stop();
   getURL("http://www.somesite.com/index.cfm", "_self");
}

My problem is that I don't want to use the movieclip as the click area, I want the click area of the button to activate the movieclip to play forward on mouseover, and in reverse on mouseout.  

Don't know how to make a button do this.

Any help would greatly be appreciated and 500 points to the expert with the solution.