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    img0b.src = "Bilder/Layout/transparent.gif"  ;

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    img1a.src = "buttons/home_dark.png"  ;
    img1b = new Image();
    img1b.src = "buttons/home_light.png"  ;

    img2a = new Image();
    img2a.src = "buttons/neu_dark.png"  ;
    img2b = new Image();
    img2b.src = "buttons/neu_light.png"  ;

    img3a = new Image();
    img3a.src = "buttons/uebermich_dark.png"  ;
    img3b = new Image();
    img3b.src = "buttons/uebermich_light.png"  ;

    img4a = new Image();
    img4a.src = "buttons/reisen_dark.png"  ;
    img4b = new Image();
    img4b.src = "buttons/reisen_light.png"  ;

    img5a = new Image();
    img5a.src = "buttons/nordamerika_dark.png"  ;
    img5b = new Image();
    img5b.src = "buttons/nordamerika_light.png"  ;

    img6a = new Image();
    img6a.src = "buttons/suedamerika_dark.png"  ;
    img6b = new Image();
    img6b.src = "buttons/suedamerika_light.png"  ;

    img7a = new Image();
    img7a.src = "buttons/europa_dark.png"  ;
    img7b = new Image();
    img7b.src = "buttons/europa_light.png"  ;

    img8a = new Image();
    img8a.src = "buttons/afrika_dark.png"  ;
    img8b = new Image();
    img8b.src = "buttons/afrika_light.png"  ;

    img9a = new Image();
    img9a.src = "buttons/naherosten_dark.png"  ;
    img9b = new Image();
    img9b.src = "buttons/naherosten_light.png"  ;

    img10a = new Image();
    img10a.src = "buttons/asien_dark.png"  ;
    img10b = new Image();
    img10b.src = "buttons/asien_light.png"  ;

    img11a = new Image();
    img11a.src = "buttons/australien_dark.png"  ;
    img11b = new Image();
    img11b.src = "buttons/australien_light.png"  ;

    img12a = new Image();
    img12a.src = "buttons/chronologisch_dark.png"  ;
    img12b = new Image();
    img12b.src = "buttons/chronologisch_light.png"  ;

    img13a = new Image();
    img13a.src = "buttons/ausruestung_dark.png"  ;
    img13b = new Image();
    img13b.src = "buttons/ausruestung_light.png"  ;

    img14a = new Image();
    img14a.src = "buttons/sponsoren_dark.png"  ;
    img14b = new Image();
    img14b.src = "buttons/sponsoren_light.png"  ;

    img15a = new Image();
    img15a.src = "buttons/links_dark.png"  ;
    img15b = new Image();
    img15b.src = "buttons/links_light.png"  ;

    img16a = new Image();
    img16a.src = "buttons/kontakt_dark.png"  ;
    img16b = new Image();
    img16b.src = "buttons/kontakt_light.png"  ;

    img17a = new Image();
    img17a.src = "buttons/sonstiges_dark.png"  ;
    img17b = new Image();
    img17b.src = "buttons/sonstiges_light.png"  ;

    img18a = new Image();
    img18a.src = "buttons/impressum_dark.png"  ;
    img18b = new Image();
    img18b.src = "buttons/impressum_light.png"  ;

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