A colleague asked me this question, which I thought was easy until I tried to provide him an answer! :-)
He has an HTML file that contains (among other things) two different <IMG> tags which both use the same animated GIF file as the image source. Of course, the browser plays the GIF animations in sync. But that's not what he wants. (He is correct in saying that the synchronization between the two images is somewhat distracting.)
I'm probably going to have to dig up a GIF editor in my spare time (yeah, right) and build him a separate GIF that animates at a different pace and starting point, but that will probably be time-consuming.
I've looked in some of my HTML documentation and the only thing I've found are the "loop" and "loopdelay" attributes, which I believe only work with AVI's, not GIF's.
Thanks in advance!