<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/10/06/setting-the-label-placement-on-a-tabbar-control-in-flex/ -->
<mx:Application name="TabBar_getChildAt_labelPlacement_test"
        xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white" viewSourceURL="srcview/index.html">

    <mx:Script>
        <![CDATA[
            import mx.controls.tabBarClasses.Tab;

            private function init():void {
                var tab:Tab;
                var idx:uint;
                var len:uint = tabBar.numChildren;
                for (idx=0; idx<len; idx++) {
                    tab = tabBar.getChildAt(idx) as Tab;
                    tab.labelPlacement = tab.label;
                } 
            }
        ]]>
    </mx:Script>

    <mx:Array id="arr">
        <mx:Object label="left"
                icon="@Embed('assets/arrow_left.png')" />
        <mx:Object label="right"
                icon="@Embed('assets/arrow_right.png')" />
        <mx:Object label="top"
                icon="@Embed('assets/arrow_up.png')" />
        <mx:Object label="bottom"
                icon="@Embed('assets/arrow_down.png')" />
    </mx:Array>

    <mx:TabBar id="tabBar"
            dataProvider="{arr}"
            tabWidth="150"
            tabHeight="60"
            creationComplete="init();" />

</mx:Application>