Problem with chat plug in, its not scrolling.

Hi!

I installed the chat plugin from you and its not working right, check
here http://kv4.net/chat-room/

I have 3 questions:

1. chat is not scrolling automaticly, if any one write an message,
message will not show up if you dont scroll down. how can i solve
this, because on your live support u use same plug in and its auto
scrolling.

2. I want site to only show the 30 latest massages in chat, so u dont
need to scroll so long, how can i do that?

3. I dont want the email log in, I just want that visitors can write
their name and start chat without logging in, how?

I wanna tank u in forward

Best Regards,