//--------------------/* Show error if called directly */

    if ( basename($_SERVER['PHP_SELF']) <> 'index.php')

    {

        echo '
Sorry, this page can\'t be served directly. ';

        echo 'Try this instead.';

        exit;

    }

//---- Do action and grab results

    if (isset($_POST['action']))

    {

        $message = admin_categories();

        if (isset($message))

        {

            echo $message;

        }

    }

?>