public static function byExtension($extension, $quality = 1.0)
		{

			// Trim it!
			$extension = trim($extension, '. ');

			// Look it up
			if (!array_key_exists($extension, self::$extensionMap)) {
				return false;
			} else {

				return new Mime(self::$extensionMap[$extension], $quality);

			}

		}