flash size

/**
 * Copyright mash ( http://wonderfl.net/user/mash )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/hkoN
 */

// how can I know if I'm running 465x465 or fullscreen?
// 465,465 even in
// http://wonderfl.net/code/79734b4ac942acb8a995a8993ae4b14a7657da8b/fullscreen

package {
    import flash.display.Sprite;
    import flash.text.*;
    public class FlashTest extends Sprite {
        [SWF(width=465, height=465, backgroundColor=0x999999)]
        public function FlashTest() {
            
            var tf :TextField = new TextField;
            tf.text = stage.stageWidth + "," + stage.stageHeight;
            
            addChild( tf );
        }
    }
}