function externalLinks() {
  if (!document.getElementsByTagName) return;
  var anchors = document.getElementsByTagName("a");
  for (var i = 0; i < anchors.length; i++) {
    var anchor = anchors[i];
    // Generico - rel
    if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "_blank") {
      anchor.target = "_blank";
      anchor.title = (anchor.title != "") ? anchor.title + " (apre in nuova finestra)" : "apre in nuova finestra";
      anchor.className = (anchor.className != '') ? anchor.className + ' _blank' : '_blank';
    }
  }

  var forms = document.getElementsByTagName("form");
  for (var i = 0; i < forms.length; i++) {
    var form = forms[i];
    if (form.getAttribute("id") == "cert") {
      form.target = "_blank";
      form.title = (form.title != "") ? form.title + " (apre in nuova finestra)" : "apre in nuova finestra";
    }
  }
}
window.onload = externalLinks;