protected function _relative_path_to_url( $path, $content ) {
		if ( wp_http_validate_url( $path ) ) {
			return $path;
		}

		$permalink = $this->get_permalink();
		if ( ! $permalink ) {
			$permalink = $this->_get_permalink( $content );
		}

		preg_match( '/(https?:\/\/[^\/]+)/', $permalink, $reg );
		if ( empty( $reg[0] ) ) {
			return false;
		}

		return trailingslashit( $reg[0] ) . $path;
	}