$(document).ready(function() {
  var commentsDiv = $('#comments');
  if (commentsDiv.length) {
    $(commentsDiv).hide();
    $('.toggle-comments').on('click', function(e) {
      e.preventDefault();
      $(commentsDiv).toggle('slow', function() {
        var anchor = $('.toggle-comments');
        var anchorText = anchor.text() == 'Hide Comments' ? 'Show Comments' : 'Hide Comments';
        $(anchor).text(anchorText);
      });
    });
  }
});