protected function getHTML( $url )
	{
		$this->reader->setUrl( $url );
		try
		{
			$content	= $this->reader->read( array(
				'CURLOPT_FOLLOWLOCATION'	=> TRUE,
				'CURLOPT_COOKIEJAR'			=> 'cookies.txt', 
				'CURLOPT_COOKIEFILE'		=> 'cookies.txt'
			) );
			$contentType	= $this->reader->getInfo( 'content_type' );
			return $contentType === 'text/html' ? $content : '';
		}
		catch( RuntimeException $e )
		{
			$this->errors[$url]	= $e->getMessage();
			throw $e;
		}
	}