<script charset="utf-8" type="text/javascript">
  $(document).ready(function() {
    $( '#question{QID} .question-item:eq(0)').addClass('hide-pseudo-elements').find('input.checkbox').remove();
    $( '#question{QID} .question-item:eq(5)').addClass('hide-pseudo-elements').find('input.checkbox').remove();
  });
</script>
 
<style type="text/css">
.hide-pseudo-elements label::before,
.hide-pseudo-elements label::after
  {
    display: none;
  }
</style>

<script type="text/javascript" charset="utf-8">
    $(document).ready(function() { 
        var SubHeading1="<strong>Land owned/leased by you</strong>";
        var SubHeading2="<strong>Adjacent land</strong>";
        var thisQuestion = $('#question{QID}');
         // Insert sub-headings
        $('.checkbox-item:eq(0)', thisQuestion).before('<li class="inserted-sub-heading"><span>'+SubHeading1+'</span></li>');
        $('.checkbox-item:eq(4)', thisQuestion).before('<li class="inserted-sub-heading"><span>'+SubHeading2+'</span></li>');
    });
</script>