[Nooob]

protected function button2_clickHandler(event:MouseEvent):void
			{
				var n:int = con.numChildren;
				trace ('n='+n);
				for (var i:int = 0; i < n; i++){
					con.removeChild(con.getChildAt(0));
					trace ('iteration=' + i +'con.numChildren=' + con.numChildren);
				}
			}