var totalMenuImgNr = 9;			 //<-- number of Menu images
  var ImgNr_startpage = 6;			 //<-- number of Menu images
  var ImgNr_leistungen = 9;			 //<-- number of Menu images
  var ImgNr_saeulen = 9;			 //<-- number of Menu images
  var ImgNr_messe = 6;				 //<-- number of Menu images
  var ImgNr_spezielles = 3;			 //<-- number of Menu images
  var ImgNr_galerie = 4;			 //<-- number of Menu images

  var ready2run=false;
 
  var menuitem = new Array(totalMenuImgNr);	 //<-- menu images array
  for (i = 0; i <= totalMenuImgNr; i++)
    menuitem[i]=new Array(2);

  var menuitem2 = new Array(totalMenuImgNr);	 //<-- menu images array
  for (i = 0; i <= totalMenuImgNr; i++)
    menuitem2[i]=new Array(2);


  // Bilder laden
  function preload_startpage(){
    for (a = 0; a <= ImgNr_startpage; a++){
      menuitem[a][0] = new Image();
      menuitem[a][0].src = String("images/start_m" + (a+1) + ".gif");
      menuitem[a][1] = new Image();
      menuitem[a][1].src = String("images/start_m" + (a+1) + "_a.gif");
    }
  }

  function preload_wir(){
      menuitem[0][0] = new Image();
      menuitem[0][0].src = String("images/lutz.gif");
      menuitem[0][1] = new Image();
      menuitem[0][1].src = String("images/lutz_a.gif");
      menuitem[1][0] = new Image();
      menuitem[1][0].src = String("images/impressum.gif");
      menuitem[1][1] = new Image();
      menuitem[1][1].src = String("images/impressum_a.gif");
  }

  // Bilder laden
  function preload_leistungen(){
    for (a = 0; a <= ImgNr_leistungen; a++){
      menuitem[a][0] = new Image();
      menuitem[a][0].src = String("images/leistungen_m0" + (a+1) + ".gif");
      menuitem[a][1] = new Image();
      menuitem[a][1].src = String("images/leistungen_m0" + (a+1) + "_a.gif");
    }
  }

  // Bilder laden
  function preload_messe(){
    for (a = 0; a <= ImgNr_messe; a++){
      menuitem[a][0] = new Image();
      menuitem[a][0].src = String("images/messe_m" + (a+1) + ".gif");
      menuitem[a][1] = new Image();
      menuitem[a][1].src = String("images/messe_m" + (a+1) + "_a.gif");
    }
  }

  // Bilder laden
  function preload_messe2(){
    for (a = 0; a <= ImgNr_messe; a++){
      menuitem[a][0] = new Image();
      menuitem[a][0].src = String("../images/messe_m" + (a+1) + ".gif");
      menuitem[a][1] = new Image();
      menuitem[a][1].src = String("../images/messe_m" + (a+1) + "_a.gif");
    }
  }

  // Bilder laden
  function preload_saeulen(){
    for (a = 0; a <= ImgNr_saeulen; a++){
      menuitem[a][0] = new Image();
      menuitem[a][0].src = String("images/saeule" + (a+1) + ".gif");
      menuitem[a][1] = new Image();
      menuitem[a][1].src = String("images/saeule" + (a+1) + "_a.gif");
      menuitem2[a][0] = new Image();
      menuitem2[a][0].src = String("../images/blank.gif");
      menuitem2[a][1] = new Image();
      menuitem2[a][1].src = String("images/saeule" + (a+1) + "_detail.gif");
    }
  }

  // Bilder laden
  function preload_spezielles(){
    for (a = 0; a <= ImgNr_spezielles; a++){
      menuitem[a][0] = new Image();
      menuitem[a][0].src = String("images/spezielles_m" + (a+1) + ".gif");
      menuitem[a][1] = new Image();
      menuitem[a][1].src = String("images/spezielles_m" + (a+1) + "_a.gif");
    }
  }

  // Bilder laden
  function preload_galerie(){
	for (a = 0; a <= ImgNr_galerie; a++){
      menuitem[a][0] = new Image();
      menuitem[a][0].src = String("images/galerie0.gif");
      menuitem[a][1] = new Image();
      menuitem[a][1].src = String("images/galerie" + (a+1) + ".gif");
    }
  }

  // Bilder tauschen
  function swapImage(imgNr1, imgNr2){
    if (ready2run){
        imgName=imgNr1;
        document [imgName].src = menuitem[imgNr1][imgNr2].src;
    }
  }

  // 2 Bilder tauschen
  function swapImage2(imgNr0, imgNr1, imgNr2){
    if (ready2run){

        imgName=imgNr0;
	    document [imgName].src = menuitem2[imgNr1][imgNr2].src;


        imgName=imgNr1;
        document [imgName].src = menuitem[imgNr1][imgNr2].src;
    }
  }

  // ein anderes Bild tauschen
  function swapImage3(imgNr0, imgNr1, imgNr2){
    if (ready2run){
        imgName=imgNr0;
        document [imgName].src = menuitem[imgNr1][imgNr2].src;
    }
  }
	
  function openAnfrage(a){
	window.open(a+'../anfrage.html','Anfrage','width=450,height=450,left=50,top=50,resizable=yes');
  }