<!--    
  var BrowserTyp = 0;
  if      (navigator.userAgent.indexOf("MSIE/3")    != -1)  BrowserTyp = 1;
  else if (navigator.userAgent.indexOf("Mozilla/2") != -1)  BrowserTyp = 2;
  else if (navigator.userAgent.indexOf("Mozilla/3") != -1)  BrowserTyp = 3;
  else                                                      BrowserTyp = 4;
  if (BrowserTyp >= 3)
  { fc = new MakeArray();
    up = new MakeArray();
    up['p01'].src = "nav/a1.gif";
    fc['p01'].src = "nav/a2.gif";
    up['p02'].src = "nav/b1.gif";
    fc['p02'].src = "nav/b2.gif";
  }
  function on(id,act)
  { if (BrowserTyp >= 3)
    { if (id!=act) document[id].src = fc[id].src; 
    }
  }
  function off(id,act)
  { if (BrowserTyp >= 3)
    { if (id!=act) document[id].src = up[id].src;
    }
  }

  function MakeArray()
  { if (BrowserTyp >= 3)
    { this.length = 2;
      this['p01'] = new Image();
      this['p02'] = new Image();
      return this;
    }
  }
  // -->