<script type="text/javascript" charset="utf-8">
  $(document).on('ready pjax:scriptcomplete',function(){
    var thisQuestion = $('#question{QID}');
 
    // Insert selects
    $('.answer-item.answer_cell_X002', thisQuestion).addClass('with-select').append('<select class="inserted-select form-control list-question-select">\
                          <option value="">...</option>\
                          <option value="1">Opcion 1</option>\
                          <option value="2">Opcion 2</option>\
                          <option value="3">Opcion 3</option>\
                          <option value="4">Opcion 4</option>\
                        </select>'); 
 
    // Listeners
    $('.inserted-select', thisQuestion).on('change', function(i) {
      if($(this).val() != '') {
        $(this).closest('.answer-item').find('input:text').val($.trim($('option:selected', this).text())).trigger('change');
      }
      else {
        $(this).closest('.answer-item').find('input:text').val('').trigger('change');
      }
    });
 
    // Returning to page
    $('.with-select input:text', thisQuestion).each(function(i) {
      var thisCell = $(this).closest('.answer-item');
      var inputText = $.trim($(this).val());
      var selectval = $('select.inserted-select option', thisCell).filter(function () { return $(this).html() == inputText; }).val();
      $('select.inserted-select', thisCell).val(selectval);
    });
 
    // Clean-up styles
    $('select.inserted-select', thisQuestion).css({
      'max-width': '100%'
    });
    $('.with-select input:text', thisQuestion).css({
      'position': 'absolute',
      'left': '-9999em'
    });
  });
</script>