$ts = $db->addQuotes( $db->timestamp( $cont[2] ) );
$op = ( $dir == 'newer' ? '>' : '<' );
$this->addWhere( "ar_namespace $op $ns OR " .
$ts = $db->addQuotes( $db->timestamp( $cont[2] ) );
$op = ( $dir == 'newer' ? '>' : '<' );
$this->addWhere( "ar_namespace $op $ns OR " .