<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/08/18/changing-the-flex-combobox-controls-opening-and-closing-easing-functions/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical" 
        verticalAlign="top" 
        backgroundColor="white" viewSourceURL="srcview/index.html">
    
    <mx:Script>
        <![CDATA[
            import mx.effects.easing.*;
        ]]>
    </mx:Script>
    
    <mx:ComboBox id="comboBox"
            openDuration="1000"
            openEasingFunction="Bounce.easeOut" 
            closeDuration="1000" 
            closeEasingFunction="Bounce.easeIn"
            prompt="Please select an item..."
            selectedIndex="-1"
            dropdownWidth="150"
            alternatingItemColors="[0xDFDFDF, 0xEEEEEE]">
        <mx:dataProvider>
            <mx:Array>
                <mx:Object label="Item 1" />
                <mx:Object label="Item 2" />
                <mx:Object label="Item 3" />
                <mx:Object label="Item 4" />
                <mx:Object label="Item 5" />
                <mx:Object label="Item 6" />
                <mx:Object label="Item 7" />
                <mx:Object label="Item 8" />
            </mx:Array>
        </mx:dataProvider>
    </mx:ComboBox>
    
</mx:Application>