<mx:Panel title="hello world" horizontalAlign="center" click="click(event);"
      paddingTop="10" paddingBottom="10" paddingLeft="10" paddingRight="10">
      <mx:Label id="myLabel" width="180" fontWeight="bold" fontSize="24"/>
      <mx:Button id="myButton" label="click me!" click="click(event);" />
    </mx:Panel>
    </mx:ViewStack>