Flex 3.6 app

main.xml

<?xml version="1.0"?>
<!-- Simple example to demonstrate the Accordion layout container. -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">

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

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

        <mx:Accordion id="accordion" width="100%" height="100%">
            <!-- Define each panel using a VBox container. -->
            <mx:VBox label="Accordion Button for Panel 1">
                <mx:Label text="Accordion container panel 1"/>
            </mx:VBox>

            <mx:VBox label="Accordion Button for Panel 2">
                <mx:Label text="Accordion container panel 2"/>
            </mx:VBox>

            <mx:VBox label="Accordion Button for Panel 3">
                <mx:Label text="Accordion container panel 3"/>
            </mx:VBox>
        </mx:Accordion>

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

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