sMap := make(map[string]string)


     for _, cookie := range page.MustCookies() {
            //log.Printf("chrome cookie %d: %+v", i, cookie)
            sMap[cookie.Name] = cookie.Value
        }
        b, err := json.Marshal(sMap)
        if err != nil {
            fmt.Println("json.Marshal failed:", err)
            return nil
        }
        //log.Println(string(b))