If you’re searching for a jabber webchat, try Claros Chat.
I haven’t been able to get it to work with my openfire/tomcat/mysql setup, but the pictures on their are pretty nice :D
In my case I clicked on the “login”; button of the webinterface and nothing happened besides the web 2.0ish spinning thingy starting to turn. Nothing in the logs either :(
http://claros.org/chat/index.jsp worked with google talk though! :D