ActionScript 3.0 :: Conversion Between Container Coordinates?

This is a mockup of my swf: It's just a menu and a sprite named scene (which is a container for obj1 and obj2 and it's child obj3).The obj1 and obj3 are draggable. While dragging them the MouseEvent.MOUSE_MOVE is fired and in it's event handler I'm updating a textfield with the object's coordinates relative to the scene object:

private function onMouseMove(e:MouseEvent):void {
myTextfield.text = "x:"+ objectBeingDragged.x + " y:" + objectBeingDragged.y;
}

When I move obj1 I have no problems because it's parent is scene and the coordinates I want are the coordinates relative to scene. But when I try to move.obj3 I'm getting the coordinates relative to it's parent (obj2) and I want the coordinates of obj3 relative to scene.I tried to convert the objectBeingDragged coordinates to global and then to local but I had no success...

private function onMouseMove(e:MouseEvent):void {
var localPoint:Point = new Point(objectBeingDragged.x, objectBeingDragged.y);
var globalPoint:Point = objectBeingDragged.localToGlobal(localPoint);[code].....