as3右键菜单（不明白为什么谁说flash右键不能够使用菜单？？？？）

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
minWidth="955"
minHeight="600"
creationComplete="application1_creationCompleteHandler(event)">
<fx:Declarations>
<!-- 将非可视元素（例如服务、值对象）放在此处 -->
</fx:Declarations>
<fx:Script>
<![CDATA[
import mx.events.FlexEvent;

private var myContextMenu:ContextMenu=new ContextMenu();

private function menu1(e:ContextMenuEvent):void
{
trace("时代中国");
// “时代中国”的响应函数具体内容
}

protected function application1_creationCompleteHandler(event:FlexEvent):void
{

ss.contextMenu = myContextMenu;
myContextMenu.addEventListener(ContextMenuEvent.MENU_SELECT,menuSelectHandler);
var item:ContextMenuItem=new ContextMenuItem("first");
myContextMenu.customItems.push(item);
item.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT,msh);

var item2:ContextMenuItem=new ContextMenuItem("seconds");
myContextMenu.customItems.push(item2);
item2.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT,msh);
}

protected function ss_clickHandler(event:MouseEvent):void
{
trace("it work");
}

private function menuSelectHandler(event:ContextMenuEvent):void
{
trace("menuSelectHandler: " + event);
}

private function msh(event:ContextMenuEvent):void
{
trace("menuItemSelectHandler: " + (event.target as ContextMenuItem).caption);
}
]]>
</fx:Script>
<s:Button id="ss"
click="ss_clickHandler(event)"/>
</s:Application>