flash 图片循环代码应该如何写，特急

flash 图片循环代码应该怎么写，特急！
我要做一个flash 图片循环 的flash ，我是新手不清楚这方面的东西。请个位高人多指点

[解决办法]

JScript code

stage.scaleMode=StageScaleMode.NO_SCALE;var loader:Loader;var urlloader:URLLoader;var xml:XML;var xmllist:XMLList;var _request:URLRequest;var total:int,num:int=0;var fadeTween:Tween;import fl.transitions.*;import fl.transitions.easing.*;urlloader=new URLLoader();urlloader.load(new URLRequest("xml/xc.xml"));urlloader.addEventListener(Event.COMPLETE,comp);    function comp(event:Event):void    {        xml=XML(event.target.data);        xmllist=xml.children();        total=xmllist.length();        //trace(xmllist[1].attribute("source"));        var pic:String=xmllist[0].attribute("source")        loader=new Loader();        loader.load(new URLRequest(pic));        addChild(loader);    }var tt:Timer=new Timer(3000);tt.addEventListener(TimerEvent.TIMER,gx);tt.start();    function gx(e:TimerEvent):void    {        num++;        if (num>=total) {            num=0;        }        loader = new Loader();        loader.load(new URLRequest(xmllist[num].attribute("source")));        addChild(loader);        fadeTween = new Tween(loader,"alpha",null,0,1,1,true);    }