public function load_options() {

		$options = get_option( self::OPTION_KEY, '' );

		if ( ! is_array( $options ) ) {
			$options = self::$default_options;
			update_option( self::OPTION_KEY, $options );
		} else {
			foreach ( self::$default_options as $key => $value ) {
				if ( ! isset( $options[ $key ] ) )
					$options[ $key ] = $value;
			}
		}

		$this->options = $options;
	}