window.onload = fensterLinks;
function fensterLinks() {
  var anchors;
  var css_class;
  if (!document.getElementsByTagName) {
    return;
  }
  anchors = document.getElementsByTagName("a");
  for (i = 0; i < anchors.length; i++) {
    css_class = anchors[i].className;
    if (css_class.match(/fenster/)) {
      anchors[i].target = "_blank";
      anchors[i].title = anchors[i].title + " (neues Fenster)";
    }
    if (css_class.match(/external/)) {
      anchors[i].target = "_blank";
      anchors[i].title = anchors[i].title + " (extern)";
    }
  }
}