Listening on the timeline for event in a class

1

Hi
I have a class in which a mc is used as a button.
I want to use this button to remove from the stage its parent instance.
Here is a small part of the class called LightBox


public var _lbClose:BtnSSClose;
:
:
function createCloseBtn():void{
    _lbClose = new BtnSSClose;
    _lbClose.name="lbClose";
    _lbClose.x=875; _lbClose.y=24;
    this.addChild(_lbClose);
   }

on the main time line I do:


:
var lightBoxCont:LightBoxContainer = new LightBoxContainer;
var lbx:LightBox = new LightBox;
lbx.name="lightBox";
:

Is it possible to set an event listener of some sort onto this button, but have it listened for out on the maintime line?
That way, when its pressed I can react to it from the main timeline and delete it?
Or am I going about this the wrong way?
As ever thanks for your help
E