i type something in and click ok and it dont showup???

happens to me frequently. i think it's caused by going to another window. hit refresh or go to another page, one of those will fix it more often than not.

about the chat thing, how about dividing off a little piece for users currently logged in?

About the chat, it's a simple webchat writen in javascript, so it can't beat a classic IRC client.
But I could create 2 window, 1 for player activity (player1 enter map, player1 kill monster ...) and a second for allow web user to chat. When many players beat some monsters online, I admit it's impossible to chat
I plan to add later a possibility to chat with player in game an the inverse. but really later ...

I'm also sorry for netscape user, currently the chat won't work for them : damn javascript and iframe incompatability