anchor.diff:      function anyFileSelected() {
           return $('input[name=selectedUserFile]:checked').length > 0;
       }
  +    function anyTwoFilesSelected() {
  +        return $('input[name=selectedUserFile]:checked').length > 1;
  +    }
   
       function showStartWebformArea() {
           $("#startWebformArea").show();
  
positive.code:     }
  
      function disableActionButtonsIfNoFilesSelected() {
          $("#mergeButton, #removeButton").prop('disabled', !anyFileSelected());
      }
  
      var init = function() {
  
negative.code:             actionForm.submit();
          });
          disableActionButtonsIfNoFilesSelected();
          disableMergeButtonIfNoFilesSelected();
          $('input[name=selectedUserFile]').change(disableActionButtonsIfNoFilesSelected);
          $('input[name=selectedUserFile]').change(disableMergeButtonIfNoFilesSelected);
      };
  
      $(init);
  