docs: function (form) {
              var elements = form.elements, params = [], element, name, value;
              for (var i = 0, len = elements.length; i < len; i++) {
                  element = elements[i];
                  if (this._isSerializable(element)) {
                      name = encodeURIComponent(element.name);
                      value = encodeURIComponent(element.value.replace(/\r?\n/g, "\r\n"));
                      params.push(name + "=" + value);
                  }
              }
              return params.join("&").replace(/%20/g, "+");
          }