Well your webpage is working now. However, there is a problem with your guestbook. I tried to put in a comment and couldn't do so. I cannot view your guestbook either.
Do you think it would help to simplify the guestbook some? Right now it seems a bit on the complicated side to me.
You are probably just seeing cached data in your browser. Go to Tools --> Internet Options and delete your Temporary Internet Files. The force a browser refresh (F5). This should cause your browser to access the server for the latest data.