flex中resize效果

<?xml version="1.0"?>
<!-- Simple example to demonstrate the Resize effect. -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
    <mx:Resize id="expand" target="{img}" widthTo="800" heightTo="600"/>
    <mx:Resize id="contract" target="{img}" widthTo="193" heightTo="192"/>
    <mx:Panel title="Resize Effect Example" width="100%" height="100%"
        paddingTop="10" paddingLeft="10" paddingRight="10" paddingBottom="10">
        <mx:Text width="100%" color="blue"
            text="Use the Button controls to resize the image."/>
        <mx:Image id="img" width="193" height="192"
            source="@Embed(source=Ƈ.png')"/>
        <mx:ControlBar>
            <mx:Button label="Expand" click="expand.end(); expand.play();"/>
            <mx:Button label="Contract" click="contract.end(); contract.play();"/>
        </mx:ControlBar>
    </mx:Panel>
</mx:Application>