Advance Guestbook 2.2 help

My guessbook wont go back to my site. Can someone help me with this. Everything else works fine. This is the message I get when I try to go back to my site page. I don't understand the error.

Query Error
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MySQL Error : Query Error
Error Number: 1064 You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near 'http://www.sharks-ent.com/Main.htm, 20' at line 1
Date : Fri, November 5, 2004 10:58:45
IP : 67.94.180.1
Browser : Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)
Referer : http://www.sharks-ent.com/guestbook/index.php
PHP Version : 4.3.9
OS : Linux
Server : Apache/1.3.32 (Unix) mod_gzip/1.3.26.1a mod_jk/1.2.5 PHP/4.3.9 mod_auth_passthrough/1.8 mod_log_bytes/1.2 mod_bwlimited/1.4 FrontPage/5.0.2.2634a mod_ssl/2.8.21 OpenSSL/0.9.7a
Server Name : www.sharks-ent.com

Please Help.

At a guess I'd say reread the thread about adding url's to the jump menu and check you have the javascript right.

Actually javascript looks correct so go back to http://proxy2.de/forum/viewtopic.php?t=3315 and go through every step one by one looking for anything you missed.

Thanks. It's working perfect now. It turns out I was missing part of a line.