var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		pre_home_a = newImage('images/buttons/home_a.jpg');
		pre_leitbild_a = newImage('images/buttons/leitbild_a.jpg');
		pre_vorstand_a = newImage('images/buttons/vorstand_a.jpg');
		pre_geschaeftsfuehrung_a = newImage('images/buttons/geschaeftsfuehrung_a.jpg');
		pre_standort_a = newImage('images/buttons/standort_a.jpg');
		pre_struktur_a = newImage('images/buttons/struktur_a.jpg');
		pre_kontakt_a = newImage('images/buttons/kontakt_a.jpg');
		preloadFlag = true;
	}
}