<script type="text/javascript" charset="utf-8">
 
  $(document).on('ready pjax:scriptcomplete',function(){
 
    // Listener on the column-2/column-3 checkboxes
    $('#question{QID} td.question-item:nth-child(3) input[type="checkbox"], #question{QID} td.question-item:nth-child(4) input[type="checkbox"]').on('change', function(e) {
 
      if($(this).is(':checked')) {
 
        var targetIndex = 3;
        if($(this).closest('td').is(':nth-child(3)')) {
          targetIndex = 4;
        }
        var thisRow = $(this).closest('tr');
 
        // Uncheck the other checkbox
        $('td.question-item:nth-child('+targetIndex+') input[type="checkbox"]', thisRow).prop('checked', false).trigger('change');
      }
    });
  });
</script>