<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" 
	creationComplete="init()">
	
<mx:Script>
	<![CDATA[

	import mx.controls.Image;
	
	private const TIMER_INTERVAL:int = 200; // m sec 단위

   private var tmTimer 	:	Timer;
	private var randomData	:	int;
	
	[Bindable] [Embed(source='image/black.png')] private var imgBlack:Class;
	[Bindable] [Embed(source='image/red.png')]   private var imgRed:Class;
	[Bindable] [Embed(source='image/blue.png')]  private var imgBlue:Class;
	[Bindable] [Embed(source='image/green.png')] private var imgGreen:Class;
	[Bindable] [Embed(source='image/white.png')] private var imgWhite:Class;

	private function init():void {
        tmTimer = new Timer( TIMER_INTERVAL );
        tmTimer.addEventListener(TimerEvent.TIMER, updateTimer);
        
        tmTimer.start();
    }

    private function updateTimer(evt:TimerEvent):void {

		randomData = Math.round(Math.random() * 4 );
		
		switch(randomData)
		{
		case 0 : imgTarget.source = imgBlack; break;	
		case 1 : imgTarget.source = imgRed; break;	
		case 2 : imgTarget.source = imgBlue; break;	
		case 3 : imgTarget.source = imgGreen; break;	
		case 4 : imgTarget.source = imgWhite; break;	
		}
		
    }

	]]>
</mx:Script>
	
	<mx:Image x="178" y="140" width="64" height="64" source="{imgBlack}" id="imgTarget"/>
	
</mx:Application>