[flexcoders] Styling menu of PopUpButton

[Richard Rodseth]

I have a PopUpButton subclass which pops up a menu built as follows:

            private function buildMenu():void {
                _menu = new Menu();
                _menu.dataProvider = _availableItems;
                _menu.labelFunction = this.menuItemLabelFunction;


                _menu.setStyle("openDuration", 3500);

                _menu.addEventListener("itemClick", itemClickHandler);
                this.popUp = _menu;
            }