     //--------------------------------------------------------------------------
      /**
      *  @private
+     *  Called during a state transition when rb is added back to display list.
      */
     private function radioButton_addedHandler(event:Event):void
     {


    /**
     *  @private
     */
    private function breadthOrderCompare(a:DisplayObject, b:DisplayObject):Number
    {

    /**
     *  @private
     */
    mx_internal function setSelection(value:FxRadioButton, fireChange:Boolean = true):void
    {
        if (_selection == value)
            return;
            
        if (value == null && _selection != null)
        {
            _selection.selected = false;
