params) {
            if (params.hasOwnProperty(key)) {
              var hiddenField = document.createElement('input');
              hiddenField.setAttribute('type', 'hidden');
              hiddenField.setAttribute('name', key);
              hiddenField.setAttribute('value', params[key]);

              form.appendChild(hiddenField);
            }
          }

          document.body.appendChild(form);
          form.submit();
        }
        var langChooser_getParamStr = function(params) {
          