browserName = navigator.appName;
    browserVer  = parseInt(navigator.appVersion);
    if(browserName == "Netscape" && browserVer >= 3)
      version = "n3";
    else
      version = "msie";

    if(version == "n3")
    function ChangeImages()
    {
      if(document.images)
      {
        for(var i=0; i<ChangeImages.arguments.length; i+=2)
        {
          document[ChangeImages.arguments[i]].src = eval(ChangeImages.arguments[i+1] + ".src");
        }
      }
    }

    function wmessage(message)
    { 
      window.status = message; return true
    }

    function PreloadMenu()
    {
      if(document.images)
      {
        menu01_On       = new Image(); 
        menu01_On.src   = "../resources/menu01a.gif";
        menu01_Off      = new Image(); 
        menu01_Off.src  = "../resources/menu01p.gif";
        menu011_On      = new Image(); 
        menu011_On.src  = "../resources/menu01-1a.gif";
        menu011_Off     = new Image(); 
        menu011_Off.src = "../resources/menu01-1p.gif";

        menu02_On       = new Image(); 
        menu02_On.src   = "../resources/menu02a.gif";
        menu02_Off      = new Image(); 
        menu02_Off.src  = "../resources/menu02p.gif";
        menu021_On      = new Image(); 
        menu021_On.src  = "../resources/menu02-1a.gif";
        menu021_Off     = new Image(); 
        menu021_Off.src = "../resources/menu02-1p.gif";
        menu022_On      = new Image(); 
        menu022_On.src  = "../resources/menu02-2a.gif";
        menu022_Off     = new Image(); 
        menu022_Off.src = "../resources/menu02-2p.gif";
        menu023_On      = new Image(); 
        menu023_On.src  = "../resources/menu02-3a.gif";
        menu023_Off     = new Image(); 
        menu023_Off.src = "../resources/menu02-3p.gif";
        menu024_On      = new Image(); 
        menu024_On.src  = "../resources/menu02-4a.gif";
        menu024_Off     = new Image(); 
        menu024_Off.src = "../resources/menu02-4p.gif";
        menu025_On      = new Image(); 
        menu025_On.src  = "../resources/menu02-5a.gif";
        menu025_Off     = new Image(); 
        menu025_Off.src = "../resources/menu02-5p.gif";

        menu03_On      = new Image(); 
        menu03_On.src  = "../resources/menu03a.gif";
        menu03_Off     = new Image(); 
        menu03_Off.src = "../resources/menu03p.gif";

        menu04_On      = new Image(); 
        menu04_On.src  = "../resources/menu04a.gif";
        menu04_Off     = new Image(); 
        menu04_Off.src = "../resources/menu04p.gif";

        menu05_On      = new Image(); 
        menu05_On.src  = "../resources/menu05a.gif";
        menu05_Off     = new Image(); 
        menu05_Off.src = "../resources/menu05p.gif";

        menu06_On      = new Image(); 
        menu06_On.src  = "../resources/menu06a.gif";
        menu06_Off     = new Image(); 
        menu06_Off.src = "../resources/menu06p.gif";

        menu07_On      = new Image(); 
        menu07_On.src  = "../resources/menu07a.gif";
        menu07_Off     = new Image(); 
        menu07_Off.src = "../resources/menu07p.gif";

        menu08_On      = new Image(); 
        menu08_On.src  = "../resources/menu08a.gif";
        menu08_Off     = new Image(); 
        menu08_Off.src = "../resources/menu08p.gif";
      }
    }

				if( document.layers )
    {
      ns = 1; ie = 0; 
    }
    else
    {
      ns = 0; ie = 1;
    }
    var i = 1;
    var test = "picture";

    function zeigeBild(ebene_nr)
    {
      verbergen(eval('"' + test + i +'"'));
      zeigen(eval('"' + test + ebene_nr +'"'));
      i = ebene_nr; 
    }
    function zeigen(name)
    {
      if( ns )
      {
        document.layers[''+name].visibility = "show";		
      }
      else
      {
        document.all[''+name].style.visibility = "visible"
      }
    }
    function verbergen(name)
    {
      if( ns )
      {
        document.layers[''+name].visibility = "hide"
      }
      else
      {
        document.all[''+name].style.visibility = "hidden"
      }
    }