function globalPopup(url, wd, ht, options) {
   if (!url)
      return;
   if (wd == null)
      wd = "400";
   if (ht == null)
      ht = "300";
   if (!options)
      var options = "resizable=yes,status=yes,scrollbars=yes";
   options += ",width=" + wd + ",height=" + ht;
   self.open(url, "popup", options);
   return;
}


function popup(str, wd, ht, options) {
   if (str.indexOf("http") == 0)
      var url = str;
   else
      var url = "http://wahl08.orf.at/popup?skin=" + str;
   globalPopup(url, wd, ht, options);
   return;
}