[1q2w3e4r5t6]

Flash Builder его автоматически создает, ни и фиг с ним))

public class Button extends Sprite
	{
		private var upState:Bitmap, downState:Sprite, overState:Sprite, loader:Loader;
		public function Button(x:int, y:int, text:String)
		{
			super();
			loader = new Loader();
			loader.load(new URLRequest("images//nextLevel.png"));
			loader.contentLoaderInfo.addEventListener(Event.COMPLETE,completeEventListener);
			this.x=x; this.y=y;
		}
 
		private function completeEventListener(e:LoaderEvent):void
		{
			upState = loader.content as Bitmap;
			this.addChild(upState);
		}
	}

Выдает ошибку: TypeError: Error #1034: Type Coercion failed: cannot convert flash.events::Event@2d54539 to org.osmf.events.LoaderEvent.

PS И что такое Embed?