text: var PhpGenUserManagementApi = {
      _invokeApiFunction:function (functionShortName, data) {
          var result = new $.Deferred();
  
          $.get(
                  'user_management_api.php',
                  $.extend({},
                      { 'hname':functionShortName },
                      data))
              .success(
              function (data) {
                  if (data.status == 'error')
                      result.reject(data.result);
                  else {
                      if (data.result)
                          result.resolve(data.result);
                      else
                          result.resolve();
                  }
              })
              .error(
              function (xhr, status, errorMessage) {
                  result.reject(status + ': ' + errorMessage);
              });
  
          return result.promise();
      },
  
      addUser:function (id, name, password) {
          return this._invokeApiFunction('au',
              {
                  'id':id,
                  'username':name,
                  'password':password
              });
      },
  
      removeUser:function (id) {
          return this._invokeApiFunction('ru',
              {
                  'user_id':id
              });
      },
  
      changeUserName:function (id, username) {
          return this._invokeApiFunction('eu',
              {
                  'user_id':id,
                  'username':username
              });
      },
  
      changeUserPassword:function (id, password) {
          return this._invokeApiFunction('cup',
              {
                  'user_id':id,
                  'password':password
              });
      },
  
      getUserGrants:function (userId) {
          return this._invokeApiFunction('gug',
              {
                  'user_id':userId
              });
      },
  
      addUserGrant:function (userId, pageName, grantName) {
          return this._invokeApiFunction('aug',
              {
                  'user_id':userId,
                  'page_name':pageName,
                  'grant':grantName
              });
      },
  
      removeUserGrant:function (userId, pageName, grantName) {
          return this._invokeApiFunction('rug',
              {
                  'user_id':userId,
                  'page_name':pageName,
                  'grant':grantName
              });
      },
  
      selfChangePassword: function (currentPassword, newPassword) {
          return this._invokeApiFunction('self_change_password',
              {
                  'current_password':currentPassword,
                  'new_password':newPassword
              });
      }
  };
  
  