text: isc.Button.create({
      title: "Login",
      click : function () {
          isc.showLoginDialog(function (credentials, dialogCallback) {
              // In a real application, we would obviously contact the server here to validate 
              // the user's credentials.  For this demo, there is only one valid user/password  
              // and it is hard-coded here
              if (credentials.username == "barney" && credentials.password == "rubble") {
                  var loginOK = true;
              } else {
                  loginOK = false;
              }
              dialogCallback(loginOK);
          },{dismissable:true});
      }
  });
  