Main timeline preloader
If we want to create movies, we sometimes may need a preloader for images and other byte-intensive objects. To create a preloader in Flash 9 using AS3 is slightly different from other Flash versions, although certain principles are the same. The class, which we use to monitor preloading is the "LoaderInfo" class. This class can also be used to preload objects within a movie. The movie below shows a simple preloader.