endless foward and back loop

I´m rotating a object, this object is rendered as images from 3d studio max.
I want to play movieclip timeline in a endless lopp foward or back depending on which button the user presses. So as long as the user holds down the button the object will rotate. Searched the board but cant find a solution. Tried some solutions with _prevframe but the timeline stops at frame 1.
Any solution to this ?

Just a guess try something like this maybe - untested -

Code:

---

//forwards
on(press){
MovieClip.onEnterFrame = function(){
        this._currentFrame += 1;
    }
}
on(release){
    delete onEnterFrame;
}


//backwards
on(press){
 MovieClip.onEnterFrame = function(){
        this._currentFrame -= 1;
    }
}
on(release){
    delete onEnterFrame;
}

---

Once created something very similar:
http://master2000.pytalhost.com/flash-help/loop.html

You can download the source-file here.

aut.

Thanks alot for the help, just what i was trying to acomplish