menuBar can not display all menuitem

Hello,everyone!
There is a Menubar.
The Menubar has 100 menuitems.
Problem:Can not display all menuitems.
Do MenuBar's SubMenu has Scroller?
Sample:
<mx:MenuBar id="myMenuBar" width="450" height="50" >
<mx:dataProvider>
<mx:XML>
<menuitem label="menuitem １"/>
... ...
<menuitem label="menuitem １"/>
</mx:XML>
</mx:dataProvider>
</mx:MenuBar>