package {
 import flash.display.Sprite;
 import flash.text.TextFormat;
 import flash.text.TextField;
 import flash.text.TextFieldAutoSize;
 import flash.system.ApplicationDomain;
 public class FlashTest extends Sprite {
 public function FlashTest() {
 /**
 * ApplicationDomain.currentDomain って
 * まともに動いてます ？
 */
 var output:XML = 
 <html>
 ApplicationDomain.currentDomain doesn't work ?? 
 
 (loaderInfo.applicationDomain == ApplicationDomain.currentDomain) 
 should&nbsp;be&nbsp;true&nbsp;but&nbsp;actually&nbsp; 
 {(loaderInfo.applicationDomain == ApplicationDomain.currentDomain)}
 
 
 
 (ApplicationDomain.currentDomain == ApplicationDomain.currentDomain) 
 should&nbsp;be&nbsp;true&nbsp;but&nbsp;actually&nbsp; 
 {(ApplicationDomain.currentDomain === ApplicationDomain.currentDomain)}
 
 
 
 (ApplicationDomain.currentDomain === ApplicationDomain.currentDomain) 
 should&nbsp;be&nbsp;true&nbsp;but&nbsp;actually&nbsp;
 {(ApplicationDomain.currentDomain == ApplicationDomain.currentDomain)}
 
 
 
 the parent domain of main application's domain 
 should&nbsp;be&nbsp;System Domain&nbsp;but&nbsp;actually&nbsp; 
 {ApplicationDomain.currentDomain.parentDomain}
 
 
 </html>;
 XML.ignoreWhitespace = false;
 XML.prettyPrinting = false;
 XML.prettyIndent = 0;
 
 var tf:TextField = addChild(new TextField()) as TextField;
 tf.autoSize = TextFieldAutoSize.LEFT;
 tf.multiline = true;
 tf.defaultTextFormat = new TextFormat("_typewriter", 10);
 tf.htmlText = output;
 }
 }
}

ApplicationDomain.currentDomain isn't ApplicationDomain.currentDomain !