function toggleNavi(MENUE){
                 if(navigator.appName == "Microsoft Internet Explorer"){
                    var subMenue=MENUE.getElementsByTagName("div")[0];
                    if(subMenue.style.display == "block"){
                       subMenue.style.display = "none";
                       }
                       else{ subMenue.style.display = "block";
                            }
                    }
                    else{ /* ALLE anderren browser KOENNEN das CSS menue interpretieren,
                             die brauchen keine JS stuetze :-P */
                         }
                 }