How to target parent container?

1

Does anyone know how I can target the parent container of whichever object receives an event?


Parent1.btnA.addEventListener(MouseEvent.CLICK, doSomething);
Parent2.btnA.addEventListener(MouseEvent.CLICK, doSomething);
Parent3.btnA.addEventListener(MouseEvent.CLICK, doSomething);

function doSomething(event:MouseEvent):void
{
    Parent?.x = 0;
}