protected function formatDate($ts) {
		if ($ts > $this->today) {
			return 'Today '.date($this->options['timeFormat'], $ts);
		}
		
		if ($ts > $this->yesterday) {
			return 'Yesterday '.date($this->options['timeFormat'], $ts);
		} 
		
		return date($this->options['dateFormat'], $ts);
	}