public function setUrl($date, $urlFormat = ':year/:month/:date/:title')
	{
		// $this->url = '/' . implode('/', explode('-', $this->getFileName(), 4)) . '.html';

		$year = date('Y', strtotime($date));
		$month = date('m', strtotime($date));
		$day = date('d', strtotime($date));
		$title = explode('-', $this->getFileName(), 4);

		// replacing variable in the comment above with proper value
		$this->url = '/' . str_replace(array(':date', ':month', ':year', ':title'), array($day, $month, $year, $title[3] . '.html'), $urlFormat);
	}