if (top.frames.length > 0)
  if(top.frames[0].name != "gb_menu")
    top.location.href="index.html";

var picOrange = new Image(8,8);
var picBlue = new Image(8,8);
picOrange.src = 'pics/_dot_orange.gif';
picBlue.src = 'pics/_dot_blue.gif';

function change (lang) {
   var c = top.frames[1].location.href;
   if (lang=="englisch")
     c = "e_" + c.substr(c.lastIndexOf("/")+1)
   else
     c = c.substr(c.lastIndexOf("_")+1);
   if (c=="intro.html")
     c="_intro.html";
   top.frames[1].document.location.href = c;
return true;
 }

function toggle(name, pos) {
  for (var i = 0; i < document.links.length; ++i)
    if (document.links[i].id != "")
      document.links[i].style.color='#fffaf0';

  for (i = 1; i < document.images.length-2; ++i)
    document.images[i].src = picBlue.src;

  document.getElementById(name).style.color='silver';
  document.images[pos].src = picOrange.src;

return;
}