I have found the problem and fixed it....
Here's the offending code:
<td width="482" align="center"> <form action="<?php echo $_SERVER[" php_self"]; ?> <?php echo (isset($_SERVER["QUERY_STRING"]) && $_SERVER["QUERY_STRING"] !=
Once changed to:
<td width="482" align="center"> <form action="<?php echo $_SERVER["PHP_SELF"]; ?> <?php echo (isset($_SERVER["QUERY_STRING"]) && $_SERVER["QUERY_STRING"] !=
it works fine.
Thank you for your help.