function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImagesArray(array) {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<array.length; i+=2) {
			document[array[i]].src = array[i+1];
		}
	}
}

function changeImages() {
	changeImagesArray(changeImages.arguments);
}

function toggleImages() {
	for (var i=0; i<toggleImages.arguments.length; i+=2) {
		if (selected == toggleImages.arguments[i])      changeImagesArray(toggleImages.arguments[i+1]);
	}
}

var selected = '';
var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		bg_preload = newImage("Bilder/haupt_530px.jpg");
		logo_over = newImage("Bilder/logo-over.jpg");
		foto_over = newImage("Bilder/foto-over.jpg");
		magazine_over = newImage("Bilder/magazine-over.jpg");
		werbung_over = newImage("Bilder/werbung-over.jpg");
		digitalworks_over = newImage("Bilder/digitalworks-over.jpg");
		models_over = newImage("Bilder/models-over.jpg");
		services_over = newImage("Bilder/services-over.jpg");
		guestbook_over = newImage("Bilder/guestbook-over.jpg");
		email_over = newImage("Bilder/email-over.jpg");
		home_07_preload = newImage("Bilder/b_team.jpg");
		home_08_preload = newImage("Bilder/b_studio.jpg");
		home_09_preload = newImage("Bilder/b_booking.jpg");
		home_10_preload = newImage("Bilder/b_impressum.jpg");
		home_01_preload = newImage("Bilder/sub_nav_home_01.jpg");
		home_02_preload = newImage("Bilder/sub_nav_home_03.jpg");
		home_03_preload = newImage("Bilder/sub_nav_home_04.jpg");
		home_04_preload = newImage("Bilder/sub_nav_home_06.jpg");
		home_05_preload = newImage("Bilder/sub_nav_home_08.jpg");
		home_06_preload = newImage("Bilder/sub_nav_home_10.jpg");		
		preloadFlag = true;
	}
}