// MovieClip.playBackwards Method v1.1
// by Jonas Galvez (jonasgalvez@uol.com.br)

MovieClip.prototype._oldPlay = MovieClip.prototype.play;
MovieClip.prototype._oldStop = MovieClip.prototype.stop;
MovieClip.prototype.play = function() {
    if(this._playingBackwards) {
        if(this._oldOEF instanceof Function) {
            this.onEnterFrame = this._oldOEF;
        } else {
            delete this.onEnterFrame;
        };
    };
    this._oldPlay();
}
MovieClip.prototype.stop = function() {
    if(this._playingBackwards) {
        if(this._oldOEF instanceof Function) {
            this.onEnterFrame = this._oldOEF;
        } else {
             delete this.onEnterFrame;
        };
    };
    this._oldStop();
};
MovieClip.prototype.playBackwards = function() {
    this._playingBackwards = true;
    this._oldOEF = this.onEnterFrame;
    this.onEnterFrame = function() {
        this._oldOEF();
        if(this._currentframe != 1) {
            this.prevFrame();
        } else if(this._oldEOF instanceof Function) {
            this.onEnterFrame = this._oldOEF;
        } else {
            delete this.onEnterFrame;
        };
    };
};
var props = ["_oldPlay", "_oldStop", "playBackwards"];
ASSetPropFlags(MovieClip.prototype, props.join(","), 1);
delete props;

// Usage Example
//
// _root.button_normal.onRelease = function() {
//     _root.myMovieClip.play();
// };
// _root.button_backwards.onRelease = function() {
//     _root.myMovieClip.playBackwards();
// };