FLex 超链接另一个Web系统

			[Bindable]
			public var mapXML:XML;
			[Bindable]
			public var pathsysUrl:String; //路径查询系统 地址


//初始化方法
			protected function init(event:FlexEvent):void
			{
				//加载地图配置文件
				var mapUrl:String="mapUrl.xml";
				var mapUl:URLLoader=new URLLoader();
				mapUl.load(new URLRequest(mapUrl));
				mapUl.addEventListener(Event.COMPLETE,mapLoadFun);
			}
			private function mapLoadFun(event:Event):void
			{
				mapXML=XML(event.target.data);
				pathsysUrl=mapXML.child("pathsysUrl").@url; //路径查询

系统
			}
	protected function linkbutton1_clickHandler(event:MouseEvent):void
			{
				//	ExternalInterface.call("window.open

('http://www.csdn.net/')")
				ExternalInterface.call(this.pathsysUrl)
			}
<?xml version="1.0"?>
<mapurl>
	<pathsysUrl
		url="window.open('http://www.csdn.net/')" />
</mapurl>