XML date sorting

programming flash
1

XML:


<root>
<something1>
</something1>
<news>
  	<item data="18.04.2009" tytul="News1"><![CDATA[To jest <b>cialo</b> newsa1.]]></item>
	<item data="15.03.2009" tytul="News2"><![CDATA[To jest <b>cialo</b> newsa2.]]></item>
	<item data="15.04.2009" tytul="News3"><![CDATA[To jest <b>cialo</b> newsa3.]]></item>
  </news>
<something2>
</something2>
</root>

AS:


var xmlRequest:URLRequest = new URLRequest("data.xml");
var xmlLoader:URLLoader = new URLLoader();
var xmlData:XML;

function xmlLoaded(e:Event):void {
	xmlDone = true;
	xmlLoader.removeEventListener(Event.COMPLETE, xmlLoaded);
	xmlData = new XML(e.target.data);
};

xmlLoader.load(xmlRequest);
xmlLoader.addEventListener(Event.COMPLETE, xmlLoaded);

// frame 2
var xmlNews:Array = new Array();
for each(var item in xmlData.news.*) {
	xmlNews.push(item);
}
trace(xmlNews);

Question: How can I sort the xmlNews:Array by the @data attribute?