if (! parent.trier_oben || ! parent.top.trier_oben){
  var my_url = String(this.location);
  var tourismus = my_url.match(/touris/);
    //window.parent.top.location =  'http://localhost/chinese/index.htm?set_tourismus'+this.location;
    window.parent.top.location =  'http://www.trier.de/tourismus/chinese/index.htm?set_tourismus'+this.location;

}