AS3 - positon advertisment that is dynamically loaded - actionscript-3

Question

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 URLRequest(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);
}
}
}

Answer 1

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.