You can preview an animation in the Save For Web dialog box or in a web browser. The Save For Web dialog box shows the animation as still frames. You must preview the animation in a browser to view the frames in timed sequence.
To view the next frame in the animation,
click the Next Frame button .
To view the previous frame in the animation, click
the Previous Frame button .
To view the last frame in the animation, click the
Last Frame button .
To view the first frame in the animation, click
the First Frame button .
Choose a browser from the Preview In menu below
the lower-right corner of the optimized image, or click the browser icon to
launch your default web browser.
Use your browser’s Stop, Refresh, or Reload commands to stop or replay the animation.