I am re-designing a clients Flash website...And converting it over to HTML so that it is more compatible and easier to update. I created an animated gif to duplicate one of the Flash items. It works fine in IE...Everytime I load the page the animated gif plays and stops.But when I open the page in Firefox...It plays on the first page load and even the 2nd page load. But, on the 3rd and after...The image just loads and doesn't play. I suspect Firefox is caching the animated gif...How do I fix it so that everytime the page loads in Firefox ...the animated gif plays everytime?

FYI! I'm already using the meta tag codes:

<meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="Expires" content="-1">
<meta http-equiv="CACHE-CONTROL" content="NO-CACHE">