This sounds like it could be a bug in Camino... you could post at their forum (http://forums.mozillazine.org/viewforum?f=12) or on their bugzilla (http://www.caminobrowser.org/documentation/bugzilla/).

I'm wondering how important supporting Camino is, though? Of course, more support is better, but it's a pretty fringe browser. If stuff works in FF, IE, Safari, and Opera, you're doing pretty well. I feel like the other browsers should be working so they support sites which work for the big players. I commend you, though. And perhaps someone here can give you a specific fix. You might need to link to your source, depending if you want people to work on it.