function preload() {
  Bild1 = new Image();
  Bild1.src = "fileadmin/img/nav_1.jpg";
  Bild2 = new Image();
  Bild2.src = "fileadmin/img/nav_1_act.jpg";
  Bild3 = new Image();
  Bild3.src = "fileadmin/img/nav_2_act.jpg";
  Bild4 = new Image();
  Bild4.src = "fileadmin/img/nav_2_act.jpg";
  Bild5 = new Image();
  Bild5.src = "fileadmin/img/nav_3_act.jpg";
  Bild6 = new Image();
  Bild6.src = "fileadmin/img/nav_3_act.jpg";
  Bild7 = new Image();
  Bild7.src = "fileadmin/img/nav_4_act.jpg";
  Bild8 = new Image();
  Bild8.src = "fileadmin/img/nav_4_act.jpg";
  Bild9 = new Image();
  Bild9.src = "fileadmin/img/nav_5_act.jpg";
  Bild10 = new Image();
  Bild10.src = "fileadmin/img/nav_5_act.jpg";
  Bild11 = new Image();
  Bild11.src = "fileadmin/img/nav_6_act.jpg";
  Bild12 = new Image();
  Bild12.src = "fileadmin/img/nav_6_act.jpg";
  Bild13 = new Image();
  Bild13.src = "fileadmin/img/vmh_logo.png";
  Bild14 = new Image();
  Bild14.src = "fileadmin/img/vmh_verwaltungs_service_gmbh.png";
}