Directed here from Vb.com - Firefox issue

[legionofangels]

Wayne Luke of the Vbulletin team told me to come here and ask you about my troubles.

Plox and thanx for any help given.

Ok here is my website:

http://www.legionofangels.net

Here is my forum:

http://www.legionofangels.net/forum/index.php

I have used animated star gifs for user ranks shown under the Titles and Names of staff members of my site. I notice that after about an hour or half hour of being online in Firefox the stars blink twice when viewing a thread, then disappear. After about 5 more minutes they don't appear again.

The only way to bring them back is to clear cache and all Firefox memory.

We have checked our coding and don't think this is a coding issue. However if so, please tell me what to change so that I can keep the star gifs animated at all times regardless of whether my pc is on for 3 days on the same screen or not.

Please help,

Thanks

legionofangels

P.S. The stars always work in Internet Explorer, however the 2 skins we added using PNG files are not compatible with IE hence the reason why Firefox is necessary.

Someone at a coding forum suggests I change the PHP code from this:

<img src="linktoyouranimation.gif" alt="">

to this:

<img src="linktoyouranimation.gif?id=<?php echo rand(5); ?>" alt="">

so that Firefox will never cache the file.

Problem is we don't know how or where within the VB PHP set up, to alter that setting.

Please help