You prepare these images in any paint or drawing program, including the ones that come with Windows, and save them as bitmap files. GIF Construction Set has an Animation Wizard, which makes it almost too easy to build your first animation. You'll notice that the list of commands for our animation alternates between the filenames of the images used and what is called a control block. These controls specify such things as the delay between displaying each image frame, how one image disappears from the screen and the next appears, and the color schemes used. One of the controls is called looping.
Most Web sites use looping because it draws the eye to a particular spot on the page.
You can set the number of times for your animation to loop here. Once you've assembled an animation, the fun begins. Test it in different browsers to ensure it runs the way you expected. Save the animation as a .GIF file, and then load the file in various browsers. Pick older versions of Navigator and Internet Explorer, as well as the most current ones, because older browsers tend to ignore loops altogether or ignore the number of loops you specified and go through the sequence only once.