var url= window.location.href;
if(url.charAt(url.length- 1)== '/') { url= url.substring(0, url.length- 1); }
url= url+ '/';
var s= url.indexOf("//")+ 2;
var e= url.indexOf("@");
if(e > 0) {
  var atpart= url.substring(s, e);
  window.location.href= url+ atpart;
}
function openWindow(url,x){
window.open(url,"",x);
}
function checkFramecall() {
  var Adressanhang=location.search;
  if(Adressanhang)
  frames.mainFrame.location.href=Adressanhang.substring(1,Adressanhang.length);
}
function checkFrameset() {
  if(!parent.topframe)
    location.href="http://www.projektb.org/frame.html?" + location.pathname;
}