function MM_showHideLayers() { //v9.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

var angeschaltet = 0;
function anzeigen(das){
 if(angeschaltet != 0)
  document.getElementById(angeschaltet).style.display='none';
 if(document.getElementById(das).style.display=='none')
  document.getElementById(das).style.display='block';
 else
  document.getElementById(das).style.display='none';}
 angeschaltet= das;
 
function closeall(das){
 if(angeschaltet != 0)
  document.getElementById(angeschaltet).style.display='none';
 else
  document.getElementById(das).style.display='none';}
 angeschaltet= das;