Antes / kittenground

	{

		// IE11 is a bit different than earlier versions

		// The isGecko() part is to ensure we get this right...

		if (!isset($this->_browsers['is_ie11']))

			$this->_browsers['is_ie11'] = strpos($_SERVER['HTTP_USER_AGENT'], 'Trident') !== false && $this->isGecko();

		return $this->_browsers['is_ie11'];

 	}

	*/

	function isEdge()

	{

		if (!isset($this->_browsers['is_edge']))

			$this->_browsers['is_edge'] = strpos($_SERVER['HTTP_USER_AGENT'], 'Edge') !== false;

		return $this->_browsers['is_edge'];

	}

	*/

	function isFirefox()

	{

		if (!isset($this->_browsers['is_firefox']))

			$this->_browsers['is_firefox'] = preg_match('~(?:Firefox|Ice[wW]easel|IceCat|Shiretoko|Minefield)/~', $_SERVER['HTTP_USER_AGENT']) === 1 && $this->isGecko();

		return $this->_browsers['is_firefox'];

	}