flex’te droprown menü

<?xml version="1.0" encoding="utf-8"?>
<mx:Application creationComplete="init()" xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="462" height="252">
 <mx:Script>
 &lt;![CDATA[
 import mx.core.EventPriority;
 import mx.events.MenuEvent;
 import mx.controls.Alert;
 import mx.controls.Button;
 import mx.managers.CursorManager;
 import flash.events.*;
 
 private function menuDinleyici(event:MenuEvent):void
 {
 if (event.item.@data != "top")
 {
 Alert.show(event.item.@label + "\n","Menü Seçildi");
 }
 }    
 
 ]]>
 &lt;/mx:Script>
 
 <mx:MenuBar id="menubar_" itemClick="menuDinleyici(event);" labelField="@label" width="100%" height="32" fillAlphas="[1.0, 1.0]" fillColors="[#FFFFFF, #E8E8E8, #E5E5E5, #E5E5E5]" fontWeight="bold" fontFamily="Verdana" fontSize="12" color="#000000" borderColor="#003CC5" cornerRadius="5" alpha="1.0">
 <mx:XMLList>
 <menuitem label="Menü A">
 <menuitem label="Alt Menü A-1" enabled="false"/&gt;
 <menuitem label="Alt Menü A-2"/&gt;
 &lt;/menuitem>
 <menuitem label="Menü B"/&gt;
 <menuitem label="Menü C"/&gt;
 <menuitem label="Menü D">
 <menuitem label="Alt Menü D-1" type="radio" groupName="one"/&gt;
 <menuitem label="Alt Menü D-2" type="radio" groupName="one" selected="true"/&gt;
 <menuitem label="Alt Menü D-3" type="radio" groupName="one"/&gt;
 &lt;/menuitem>
 &lt;/mx:XMLList>
 &lt;/mx:MenuBar>
 
&lt;/mx:Application>