Not sure which section this belongs in so I threw it in General, I have a small issue that should have an easy fix I just wanted to be sure.

If a user visits my forum using ' site.com/forum ' instead of ' www.site.com/forum ' some icons don't show, refer to image below for what I'm talking about.

http://i.imgur.com/QHx1WHg.png
http://i.imgur.com/QHx1WHg.png

How could I solve this problem?

I was thinking of just using .htaccess to change site.com to www.site.com but not sure exactly how, or if there is a better way.

Thanks.