function preloadImages(){
    var image1 = new Image();
    image1.src = "design/button_home_klick.png";
    image1.src = "design/aktiv_12.png";
    image1.src = "design/blackalpha70.png";
    image1.src = "design/button_galerie_pfeil_links_klick.png";
    image1.src = "design/button_galerie_pfeil_rechts_klick.png";
    image1.src = "design/button_home_klick.png";
    image1.src = "design/button_home_over.png";
    image1.src = "design/button_pfeil_links_klick.png";
    image1.src = "design/button_pfeil_links_over.png";
    image1.src = "design/over.png";
}