<script type="text/javascript" charset="utf-8">
 
  $(document).on('ready pjax:scriptcomplete',function(){
 
    // Identify the questions
    var thisQuestion = $('#question{QID}');
    var randomProducts = $(thisQuestion).nextAll('.multiple-short-txt:eq(0)');
 
    // Listener on the array
    $('input:radio', thisQuestion).on('click', function(e) {
      // Build an array of products
      var products = [];
      $('input:radio:checked', thisQuestion).each(function(i) {
        if($(this).val() < 3) {
          products.push($.trim($(this).closest('tr').find('.answertext').text()));
        }
      });
      // Randomize the array
      shuffleArray(products);
 
      // Load the hidden question inputs
      $('input:text:eq(0)', randomProducts).val(products[0]).trigger('keyup');
      $('input:text:eq(1)', randomProducts).val(products[1]).trigger('keyup');
    });
    });
 
  function shuffleArray(array) {
    for (var i = array.length - 1; i > 0; i--) {
      var j = Math.floor(Math.random() * (i + 1));
      var temp = array[i];
      array[i] = array[j];
      array[j] = temp;
    }
    return array;
  }  
</script>

<script type="text/javascript" charset="utf-8">
 
  $(document).on('ready pjax:scriptcomplete',function(){
 
    // Identify the questions
    var thisQuestion = $('#question{QID}');
    var randomProducts = $(thisQuestion).nextAll('.multiple-short-txt:eq(0)');
 
    // Listener on the array
    $('input:radio', thisQuestion).on('click', function(e) {
      // Build an array of products
      var products = [];
      $('input:radio:checked', thisQuestion).each(function(i) {
        if($(this).val() < 3) {          
          products.push(($(this).closest('tr').index()+1));
        }
      });
      // Randomize the array
      shuffleArray(products);
 
      // Load the hidden question inputs
      $('input:text:eq(0)', randomProducts).val(products[0]).trigger('keyup');
      $('input:text:eq(1)', randomProducts).val(products[1]).trigger('keyup');
    });
    });
 
  function shuffleArray(array) {
    for (var i = array.length - 1; i > 0; i--) {
      var j = Math.floor(Math.random() * (i + 1));
      var temp = array[i];
      array[i] = array[j];
      array[j] = temp;
    }
    return array;
  }  
</script>