<script type="text/javascript" charset="utf-8">    
  $(document).ready(function() {  
 
    // Identify this question
    var thisQuestion = $('#question{QID}');
 
    // Assign row and column specific classes
    $('table.subquestions-list tr.answers-list', thisQuestion).each(function(i) {
      $(this).addClass('row-'+(i+1)+'');
      $('> *', this).each(function(i){
        $(this).addClass('column-'+i+'');
      });
    });
 
    // Insert text/images
    $('.row-1 .column-1 .radio', thisQuestion).after('<br  />Inserted text 1...');
    $('.row-2 .column-3 .radio', thisQuestion).after('<br  /><img src="https://www.limesurvey.org/images/template/logo.jpg" />');
    $('.row-3 .column-4 .radio', thisQuestion).after('<br  />Inserted text 2...');
  });
</script>