... Background, Balloon, and Actions. On the Balloon layer, you'll see a movie clip instance of a hot air balloon with an instance name of balloon_mc. The Background layer simply displays an image. ... exercise, you'll move a hot air balloon around the screen using your keyboard and the Key class. 1. Open balloon1.fla in the Lesson04/Assets directory. This movie contains three layers: Background, ... However, here the if statement reacts to the Up and Down Arrow keys rather than the Right and Left Arrow keys. The first part of this statement says that if the Up Arrow key is pressed, the movie...