[AS3] System.useCodePage = true

This is my AS2 code:[FONT=monospace]
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System.useCodepage=true;
var xml:XML = new XML();
xml.ignoreWhite=true
xml.load("http://www.flasherblog.com/yeni/read/dergi_oku.php");
//
xml.onLoad = function (ok) {
    trace(xml);
}

[FONT=monospace]

When you test there is no error.

This is the AS3 version of that code:
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System.useCodePage=true;
var testXML:XML = new XML();

var urlLoader:URLLoader =new URLLoader();
urlLoader.load(new URLRequest("http://www.flasherblog.com/yeni/read/dergi_oku.php"));
urlLoader.addEventListener(Event.COMPLETE, onXMLLoad);

function onXMLLoad(e:Event):void {
    testXML = new XML(urlLoader.data);
    testXML.ignoreWhitespace=true;
    trace(testXML);
}

[FONT=monospace] When I test it, I am getting this error:

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TypeError: Error #1090: XML parser failure: element is malformed.
at Untitled_fla::MainTimeline/onXMLLoad()
at flash.events::EventDispatcher/flash.events:EventDispatcher::dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at flash.net::URLLoader/flash.net:URLLoader::onComplete()

[FONT=monospace]

What is the problem? How can I solve this?
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