如何使用Flex TabNavigator

<?xml version="1.0"?>
<!-- Simple example to demonstrate the TabNavigator layout container. -->
<!--
	如何使用Flex TabNavigator
	MyShareBook.cn 翻译
-->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">

    <mx:Panel title="TabNavigator Container Example" height="90%" width="90%" 
        paddingTop="10" paddingLeft="10" paddingRight="10" paddingBottom="10">

        <mx:Label width="100%" color="blue"
            text="Select the tabs to change the panel."/>

        <mx:TabNavigator id="tn"  width="100%" height="100%">
            <!-- Define each panel using a VBox container. -->

            <mx:VBox label="Panel 1">
                <mx:Label text="TabNavigator container panel 1"/>
            </mx:VBox>

            <mx:VBox label="Panel 2">
                <mx:Label text="TabNavigator container panel 2"/>
            </mx:VBox>

            <mx:VBox label="Panel 3">
                <mx:Label text="TabNavigator container panel 3"/>
            </mx:VBox>
        </mx:TabNavigator>

        <mx:Label width="100%" color="blue"
            text="Programmatically select the panel using a Button control."/>

        <mx:HBox>
            <mx:Button label="Select Tab 1" click="tn.selectedIndex=0"/>
            <mx:Button label="Select Tab 2" click="tn.selectedIndex=1"/>
            <mx:Button label="Select Tab 3" click="tn.selectedIndex=2"/>
        </mx:HBox>
    
    </mx:Panel>
</mx:Application>