start = new Image();
start.src = "./menubuttons/start.png";     /* erste Standard-Grafik */	
start_this = new Image();
start_this.src = "./menubuttons/start_this.png"; /* erste Highlight-Grafik */
start_mo = new Image();
start_mo.src = "./menubuttons/start_mo.png";

aktuell = new Image();
aktuell.src = "./menubuttons/aktuell.png";
aktuell_this = new Image();
aktuell_this.src = "./menubuttons/aktuell_this.png";
aktuell_mo = new Image();
aktuell_mo.src = "./menubuttons/aktuell_mo.png";

tagebuch = new Image();
tagebuch.src = "./menubuttons/tagebuch.png";
tagebuch_this = new Image();
tagebuch_this.src = "./menubuttons/tagebuch_this.png";
tagebuch_mo = new Image();
tagebuch_mo.src = "./menubuttons/tagebuch_mo.png";

gaeste = new Image();
gaeste.src = "./menubuttons/gaeste.png";
gaeste_this = new Image();
gaeste_this.src = "./menubuttons/gaeste_this.png";
gaeste_mo = new Image();
gaeste_mo.src = "./menubuttons/gaeste_mo.png";

archiv = new Image();
archiv.src = "./menubuttons/archiv.png";
archiv_this = new Image();
archiv_this.src = "./menubuttons/archiv_this.png";
archiv_mo = new Image();
archiv_mo.src = "./menubuttons/archiv_mo.png";

down = new Image();
down.src = "./menubuttons/down.png";
down_this = new Image();
down_this.src = "./menubuttons/down_this.png";
down_mo = new Image();
down_mo.src = "./menubuttons/down_mo.png";

kontakt = new Image();
kontakt.src = "./menubuttons/kontakt.png";
kontakt_this = new Image();
kontakt_this.src = "./menubuttons/kontakt_this.png";
kontakt_mo = new Image();
kontakt_mo.src = "./menubuttons/kontakt_mo.png";

function Bildwechsel(Bildnr,Bildobjekt) {
 window.document.images[Bildnr].src = Bildobjekt.src;
}