var winIE = (navigator.userAgent.indexOf("Opera")==-1 && (document.getElementById && document.documentElement.behaviorUrns))  ? true : false;

/*document.onclick = function(e) {
  var target = e ? e.target : window.event.srcElement;

  while (target && !/^(a|body)$/i.test(target.nodeName)) {
    target = target.parentNode;
  }

  // extlinks
  if (target && target.getAttribute('rel') && target.rel == 'external') {
     var external = window.open(target.href);
     return external.closed;
  }
  // litebox
  if (target && target.getAttribute('href') && (target.getAttribute('rel') == 'lightbox')) {
    showThumbnail(target);
    return false;
  }
}*/

function showButton() {
  //var sideBar = document.getElementById('sidebar');
  //sideBar.innerHTML += '<a href="http://www.ilquaderno.it/newsticker/" title="News" class="banner"><img src="/i/q_120x60.gif" alt="news" width="120" height="60"></a>';
}

if (winIE) {
  window.onload = showButton;
}