Icons not showing due to www. prepend to icons URL

Hi everybody,
I am banging my head on the walls with this one.
I am running Drupal 6 with the last releases of phpfreechat module and scripts and everything was going smoothly, except for this.
When I am opening the chat room on a node page, Chat is working and is usable but I dont have ay icon showing, only the text ALT.
My site base URL being john.doe.net, the icons URL is www.john.doe.net, and of course it's not working :-(( Note that I dont have any access problem to the files, and they opened if I keyed the right path in my browser.

Of course, I can change my Apache config so that I will serve these files with the www. prepend, but I would like to get the issue behind me.

Any clue gentlemens (and ladies of course)

Regards