DOWNLOAD FIXED FLA FILE

I've added the close button, and also fixed the error the smooth drag 'n' drop caused. To change the background, check the function on the background layer, loadImage. There's an example after the function, to demonstrate it. Simply use that code on one of your background buttons, and call that function with the URL path to the image you want as the background, and it will automatically load it in Flash and change its size to fit the screen!

Hope this helps