var manifest = {
  settings: [
    {
      name: "moje",
      type: "group",
      label: "Ustawienia",
      settings: [
        { name: "mojlogin", type: "text", label: "Login" }
      ]
    }
  ]
};

(function(){
jetpack.future.import("jetpack.storage.settings");

function testujemy()
{
          var baza = jetpack.storage.settings.moje;
          var cWindow =  jetpack.tabs.focused.contentWindow;

          cWindow.alert(baza.mojlogin);
}

jetpack.statusBar.append(
{
  html: "Test",
  width: 15,
  onReady: function(){
      testujemy();
  }

});

})();