image1 = new Image();
  image1.src = "/images/menubar/search_on.jpg";
  image2 = new Image();
  image2.src = "/images/menubar/aircraft_on.jpg";
  image3 = new Image();
  image3.src = "/images/menubar/photo_on.jpg";
  image4 = new Image();
  image4.src = "/images/menubar/weather_on.jpg";
  image5 = new Image();
  image5.src = "/images/menubar/links_on.jpg";
  image6 = new Image();
  image6.src = "/images/menubar/contact_on.jpg";
  image7 = new Image();
  image7.src = "/images/menubar/home_on.jpg";
  listbutton = new Image();
  listbutton.src = "/images/sidebar/titles/list_button_on.jpg";