Help with Drawing with the mouse in Flash from scene to scene

1

Hi there,
I am having trouble trying to figure out how to stop the drawing from showing up when I go to the next scene.

I have a Flash file with the AS below. This AS lets the user draw with the mouse but when the user goes to another frame scene by selecting a button the drawing still appears on the screen. How do I make it go away when the user chooses to go to the next scene? Any guidance is appreciated. Thanks.

Here is the AS I am using:

Mouse.addListener(mouseListener);

this.createEmptyMovieClip(“drawing_mc”, this.getNextHighestDepth());
var mouseListener:Object = new Object();
mouseListener.onMouseDown = function() {
this.drawing = true;
drawing_mc.moveTo(_xmouse, _ymouse);
drawing_mc.lineStyle(3, 0x99CC00, 100);
};
mouseListener.onMouseUp = function() {
this.drawing = false;
};
mouseListener.onMouseMove = function() {
if (this.drawing) {
drawing_mc.lineTo(_xmouse, _ymouse);
}
updateAfterEvent();
};
Mouse.addListener(mouseListener);

var keyListener:Object = new Object();
keyListener.onKeyDown = function() {
if (Key.isDown(Key.DELETEKEY) || Key.isDown(Key.BACKSPACE)) {
drawing_mc.clear();
}
};
Key.addListener(keyListener);

Thanks for any help.