btn_home = new Image();
btn_home.src = "images/button/btn_home.jpg";     		/* Standard-Grafik */
btn_home_over = new Image();
btn_home_over.src = "images/button/btn_home_over.jpg"; 		/* Highlight-Grafik */
btn_home_down = new Image();
btn_home_down.src = "images/button/btn_home_down.jpg"; 		/* Button-Down-Grafik */

btn_ueber_mich = new Image();
btn_ueber_mich.src = "images/button/btn_ueber_mich.jpg";
btn_ueber_mich_over = new Image();
btn_ueber_mich_over.src = "images/button/btn_ueber_mich_over.jpg";
btn_ueber_mich_down = new Image();
btn_ueber_mich_down.src = "images/button/btn_ueber_mich_down.jpg";

btn_menue = new Image();
btn_menue.src = "images/button/btn_menue.jpg";
btn_menue_over = new Image();
btn_menue_over.src = "images/button/btn_menue_over.jpg";
btn_menue_down = new Image();
btn_menue_down.src = "images/button/btn_menue_down.jpg";

btn_catering = new Image();
btn_catering.src = "images/button/btn_catering.jpg";
btn_catering_over = new Image();
btn_catering_over.src = "images/button/btn_catering_over.jpg";
btn_catering_down = new Image();
btn_catering_down.src = "images/button/btn_catering_down.jpg";

btn_diner = new Image();
btn_diner.src = "images/button/btn_diner.jpg";
btn_diner_over = new Image();
btn_diner_over.src = "images/button/btn_diner_over.jpg";
btn_diner_down = new Image();
btn_diner_down.src = "images/button/btn_diner_down.jpg";

btn_kurse = new Image();
btn_kurse.src = "images/button/btn_kurse.jpg";
btn_kurse_over = new Image();
btn_kurse_over.src = "images/button/btn_kurse_over.jpg";
btn_kurse_down = new Image();
btn_kurse_down.src = "images/button/btn_kurse_down.jpg";

btn_events = new Image();
btn_events.src = "images/button/btn_events.jpg";
btn_events_over = new Image();
btn_events_over.src = "images/button/btn_events_over.jpg";
btn_events_down = new Image();
btn_events_down.src = "images/button/btn_events_down.jpg";

btn_galery = new Image();
btn_galery.src = "images/button/btn_galery.jpg";
btn_galery_over = new Image();
btn_galery_over.src = "images/button/galery_over.jpg";
btn_galery_down = new Image();
btn_galery_down.src = "images/button/btn_galery_down.jpg";


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