// Content

    $action = isset($_GET['p'])?$_GET['p']:'';

    $action = strtolower( $action );

    switch ( $action )

    {

        case 'help';

            $page = 'p_help.php';

            break;

        default: 

            $page = 'p_main.php';

     }

     require_once('contents/' . $page);

?>