window.onload = function () {
  var url = window.location.pathname,
      file = url.split('/')[url.split('/').length - 1].substring(0,5);

  if (file == 'entry') {
    add_shares(url);
  }
};

function add_shares (url) {
  var section = document.getElementsByTagName('section')[0],
      script = document.createElement('script');

  script.type = 'text/javascript';
  script.src = '/hashover/comments.php';
  section.appendChild(script);
}