public static function register(){
		if( self::$registered ){
			return;
		}

		self::$libDir = dirname(__FILE__);

		if(false === spl_autoload_register(array('Less_Autoloader', 'loadClass'))){
			throw new Exception('Unable to register Less_Autoloader::loadClass as an autoloading method.');
		}

		self::$registered = true;
	}