function preloadImages() {
		Normal1 = new Image();
		Normal1.src = "button_startseite.gif";     /* erste Standard-Grafik */
		Over1 = new Image();
		Over1.src = "button_startseite-over.gif"; /* erste Highlight-Grafik */
		Down1 = new Image();
		Down1.src = "button_startseite-down.gif";
		
		Normal2 = new Image();
		Normal2.src = "btn-werkstatt-normal.png";     /* zweite Standard-Grafik */
		Over2 = new Image();
		Over2.src = "btn-werkstatt-over.png"; /* dritte Highlight-Grafik */
		Down2 = new Image();
		Down2.src = "btn-werkstatt-down.png";
		
		Normal3 = new Image();
		Normal3.src = "btn-produkt-normal.png";     /* dritte Standard-Grafik */
		Over3 = new Image();
		Over3.src = "btn-produkt-over.png"; /* dritte Highlight-Grafik */
		Down3 = new Image();
		Down3.src = "btn-produkt-down.png";
		
		Normal4 = new Image();
		Normal4.src = "btn-vertrieb-normal.png";     /* vierte Standard-Grafik */
		Over4 = new Image();
		Over4.src = "btn-vertrieb-over.png"; /* vierte Highlight-Grafik */
		Down4 = new Image();
		Down4.src = "btn-vertrieb-down.png";
		
		Normal5 = new Image();
		Normal5.src = "btn-kontakt-normal.png";     /* fünfte Standard-Grafik */
		Over5 = new Image();
		Over5.src = "btn-kontakt-over.png"; /* fünfte Highlight-Grafik */
		Down5 = new Image();
		Down5.src = "btn-kontakt-down.png";
}


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

function FensterOeffnen (Adresse) {
  MeinFenster = window.open(Adresse, "Zweitfenster", "width=650,height=560,left=300,top=70, scrollbars=yes");
  MeinFenster.focus();
}