document.observe("dom:loaded", function() {
  // Adds _blank in non-deprecated way
  $$("a[rel='external']").each(function(t) {
    t.writeAttribute("target","_blank");
    t.writeAttribute("title","Opens in new window");
  });
  // Hide error notices
  $$("#error-notice").invoke("observe", "click", function() {
    this.hide();
  });
});