AS3 - positon advertisment that is dynamically loaded

I'm using the code below to place an ad inside a mobile game that I'm building. My problem is that the ad appears in the top left corner of the stage and I need to be able to move it centered near the bottom. I got this code from a book and I understand about 70% of what it's doing. Thanks for any direction you can offer.

Rich

// Smaato Advertising Code for Start Screen

var request:URLRequest = new URLRequest("http://soma.smaato.com/oapi/reqAd.jsp");
var variables:URLVariables = new URLVariables();
variables.adspace = "0";
variables.pub = "0";

variables.devip = "127.0.0.1";
variables.format = "IMG";
variables.adcount = "1";
variables.response = "XML";
request.data = variables;
var loader:URLLoader = new URLLoader();

loader.addEventListener(Event.COMPLETE, onComplete);
loader.load(request);


function onComplete(e:Event):void
{
var data:XML = new XML(loader.data as String);
var status:String = data.*::status.toString();
if(status == "success")
{
    var ad:XMLList = data.*::ads.*::ad;
    var link:String = ad.*::link.toString();

    var l:Loader = new Loader();
    l.load(new URL开发者_JAVA百科Request(link));
    addChild(l);
    var clickurl:String = ad.*::action.@target.toString();
    l.addEventListener(MouseEvent.CLICK, onAdClick);

    function onAdClick(e:MouseEvent):void
    {
        var request:URLRequest = new URLRequest(clickurl);
        navigateToURL(request);
    }

}
}

---

The problem is that you are never actually positioning the image, so the default is [0,0], the top-left corner of the screen.

var request:URLRequest = new URLRequest("http://soma.smaato.com/oapi/reqAd.jsp");
var variables:URLVariables = new URLVariables();
variables.adspace = "0";
variables.pub = "0";

variables.devip = "127.0.0.1";
variables.format = "IMG";
variables.adcount = "1";
variables.response = "XML";
request.data = variables;
var loader:URLLoader = new URLLoader();

loader.addEventListener(Event.COMPLETE, onComplete);
loader.load(request);


function onComplete(e:Event):void
{
    var data:XML = new XML(loader.data as String);
    var status:String = data.*::status.toString();
    if(status == "success")
    {
        var ad:XMLList = data.*::ads.*::ad;
        var link:String = ad.*::link.toString();
        var l:Loader = new Loader();
        l.load(new URLRequest(link));
        l.contentLoaderInfo.addEventListener(Event.COMPLETE, onAdLoaded);
        function onAdLoaded(e:Event):void
        {
            var ad:DisplayObject = e.target.content;
            addChild(ad);
            ad.x = (ad.stage.stageWidth - ad.width)  / 2;
            ad.y = (ad.stage.stageHeight - ad.height) / 2 + 50;
        }
        var clickurl:String = ad.*::action.@target.toString();
        l.addEventListener(MouseEvent.CLICK, onAdClick);
        function onAdClick(e:MouseEvent):void
        {
            var request:URLRequest = new URLRequest(clickurl);
            navigateToURL(request);
        }
    }
}

That will center the loaded file. The 50 number is because if you don't want it to be in the exact center, you can use the number to adjust the y-value accordingly.

By the way, I recommend you to grab another book, becase the code you are using seems a bit old and have poor performance.

If you have any other issue regarding this, comment it and I can expand my answer.