code: function show(id) {
      $('#ao' + id).hide();
      $('#ah' + id).show();
      var context = $.extend({id: id}, opts);
      var popup = $(renderTemplate(popupTemplate, context)).hide();
      popup.find('textarea[name="proposal"]').hide();
      popup.find('a.by' + by).addClass('sel');
      var form = popup.find('#cf' + id);
      form.submit(function(event) {
        event.preventDefault();
        addComment(form);
      });
      $('#s' + id).after(popup);
      popup.slideDown('fast', function() {
        getComments(id);
      });
    }
docs: Show a comment div.