text: var application = application || {};
  
  application.data = (function () {
  
      var uris = {
          USERS: 'users',
          LOG_IN: 'login',
          BOOKMARKS: 'classes/Bookmark'
      }
  
      function Data(baseUrl) {
          this.baseUrl = baseUrl;
          this.users = new Base(baseUrl + uris.USERS);
          this.bookmarks = new Base(baseUrl + uris.BOOKMARKS);
      }
  
      Data.prototype.signUp = function (username, password, success, error) {
          var userData = JSON.stringify({'username': username, 'password': password});
          requester.post(this.baseUrl + uris.USERS, userData, success, error);
      }
  
      Data.prototype.login = function (username, password, success, error) {
          var url = this.baseUrl + uris.LOG_IN + '?username=' + username + '&password=' + password;
          requester.get(url, success, error);
      }
  
      var Base = (function () {
  
          function Base(url) {
              this.serviceUrl = url;
          }
  
          Base.prototype.getAll = function (objectId,
                                            success, error) {
              var url = this.serviceUrl + '?where={"userId":{"__type":"Pointer","className":"_User","objectId":"' + objectId + '"}}'; // + objectId + '" }}'
              requester.get(url, success, error);
          }
  
          Base.prototype.add = function (data, success, error) {
              requester.post(this.serviceUrl, data, success, error);
          }
  
          Base.prototype.remove = function (id, success, error) {
              requester.delete(this.serviceUrl + '/' + id, success, error);
          }
  
  
          return Base
      }());
  
      return {
          get: function (baseUrl) {
              return new Data(baseUrl);
          }
      }
  
  }());