... 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. ... 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 ... exercise, you'll place actions on the first frame of the Actions layer. 2. With the Actions panel open, select Frame 1 in the Actions layer and add this script: 3. 4. var speed:Number...