if ($return_to_url->is_get_variable_set($key)) {
             $return_to_url->unset_get_variable($key);
         }
     }
 } else {
     /*
      * Make alterations to the table.
      */
     #		echo "cancel not set.\n"; exit;
     try {
         /*
          * Add to the table.
          */
         if (isset($_GET['add_row'])) {
             #print_r($_POST); exit;
             $id = $xml_db_page_manager->add($table, $_POST, $_FILES);
             $return_to_url->unset_get_variable('add_row');
             $return_to_url->set_get_variable('last_added_id', $id);
         }
         /*
          * Update the table.
          */
         if (isset($_GET['edit_id'])) {
             $xml_db_page_manager->update_by_id($table, $_GET['edit_id'], $_POST, $_FILES);
             $return_to_url->unset_get_variable('edit_id');
             $return_to_url->set_get_variable('last_edited_id', $_GET['edit_id']);
         }
         /*
          * Delete rows from the database.
          */
         if (isset($_GET['delete_id'])) {