Hello.as

package {
	import flash.display.Sprite;
	import flash.external.ExternalInterface;

	[SWF(frameRate=1, background=0x000000)]

	public class Hello extends Sprite {
		public function Hello() {
			ExternalInterface.marshallExceptions = true;
			ExternalInterface.addCallback('hello', function():String {
				return 'hello!';
			});
		}
	}
}