var baseuri = "http://rss.orf.at/";
var query = location.search;

if (query) {
   var parts = query.split("?file=");
   if (parts.length > 0) {
      var url = parts[1];
      var parts = url.split("/");
      var fname = parts[parts.length-1];
      var name = fname.substring(0, fname.length-4);
      var xmlfile = baseuri + fname;
      var jsfile = xmlfile + ".js";
   }
} else {
   location.replace(location.href + "?file=oe3.xml");
}