Combined Code
	frame 1 {
		gotoAndStop('right_end');
	}
	button 9 {
		on (press) {
			play();
		}
		on (release) {
			stop();
		}
	}
	button 12 {
		on (press) {
			play();
		}
		on (release) {
			gotoAndStop(1);
		}
	}
	movieClip 13	{
		frame 1 {
			stop();
		}
		frame 3 {
			gotoAndPlay(2);
			_root.prevFrame();
		}
	}
	frame 30 {
		gotoAndPlay('left_end');
	}