protected function getLimitQuery( $limits = array() )
	{
		if( is_array( $limits ) && count( $limits ) == 2 )
			$limits	= ' LIMIT '.$limits[0].', '.$limits[1];
		else if( is_int( $limits ) && $limits )
			$limits	= ' LIMIT 0, '.$limits;
		else
			$limits	= '';
		return $limits;
	}