//I get the Response from the HotSpot so I can fill a ViewModel with the
// hidden parameters.
HtmlDocument htmlElement = new HtmlDocument();
        responseClass = new HttpRequestResponse("", "https://secure.etecsa.net:8443");

        htmlElement.LoadHtml(responseClass.SendNautaRequest());
        FillaNautaViewModel(htmlElement);
        string parms =
            String.Format(
                "wlanuserip={0}&wlanacname={1}&wlanmac={2}&firsturl={3}&ssid={4}&usertype={5}&gotopage={6}&successpage={7}&loggerId={8}&lang={9}&username={10}&password={11}&CSRFHW={12}",
                _nautaViewModel.wlanuserip, _nautaViewModel.wlanacname, _nautaViewModel.wlanmac,
                _nautaViewModel.firsturl, _nautaViewModel.ssid, _nautaViewModel.usertype, _nautaViewModel.gotopage,
                _nautaViewModel.successpage, _nautaViewModel.loggerId, _nautaViewModel.lang,
                "xxx", "xxxx", _nautaViewModel.CSRFHW);
        string login = responseClass.Login(parms);

        htmlElement.LoadHtml(login);
        if (htmlElement.DocumentNode.Descendants("script").Any(c => c.ParentNode.Name == "body"))
        {
            MessageBox.Show(
                htmlElement.DocumentNode.Descendants("script")
                    .First(c => c.ParentNode.Name == "body")
                    .InnerHtml.Split('"')[1]);
        }
        else
        {
            GetLeftTime();
        }