As you know JPEG is an image file format, so cannot contain any
preloader/decisions and cannot perform any operation within movie.
So it becomes problem for users (using slow dial-up connections),
because they cannot see anything while JPEG is being loaded. So we
decided to create a customizable plugin which will start automatically
when any JPEG file is being loaded.
This tutorial demonstrates how to create a percentage preloder for
JPEG file loaded in your movie from an externally JPEG file.
I have created three levels sources (beginer, intermediate, advanced)
All of three resources can be downloaded from Download Center