protected function formatSeconds($pattern,$date)
	{
		$seconds=$date['seconds'];
		if($pattern==='s')
			return $seconds;
		elseif($pattern==='ss')
			return str_pad($seconds,2,'0',STR_PAD_LEFT);
		else
			throw new CException(Yii::t('yii','The pattern for seconds must be "s" or "ss".'));
	}