Zoom  - AS3 Flex

<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the Zoom effect. -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx">

    <fx:Script>
        <![CDATA[
            import flash.events.MouseEvent;

            public function doZoom(event:MouseEvent):void {
                if (zoomAll.isPlaying) {
                    zoomAll.reverse();
                }
                else {
                    // If this is a ROLL_OUT event, play the effect backwards.
                    // If this is a ROLL_OVER event, play the effect forwards.
                    zoomAll.play([event.target], event.type == MouseEvent.ROLL_OUT ? true : false);
                }
            }
        ]]>
    </fx:Script>

    <fx:Declarations>
        <mx:Zoom id="zoomAll" zoomWidthTo="1" zoomHeightTo="1" zoomWidthFrom=".5" zoomHeightFrom=".5"  />
    </fx:Declarations>

    <s:Panel title="Zoom Effect Example" width="95%" height="95%" >
        <s:VGroup left="20" right="20" top="20" bottom="20">

            <s:Label width="100%" color="blue"
                text="Move the mouse over the image to enlarge it. Move the mouse off of the image to shrink it."/>

            <mx:Image id="img"
                source="@Embed(source='assets/Nokia_6630.png')"
                scaleX=".5" scaleY=".5"
                rollOver="doZoom(event)"
                rollOut="doZoom(event)"/>
        </s:VGroup>

    </s:Panel>
</s:Application>