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

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

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		Navigation2oben_05_over = newImage("images/Navigation2oben_05-over.gif");
		Navigation2oben_08_over = newImage("images/Navigation2oben_08-over.gif");
		Navigation2oben_10_over = newImage("images/Navigation2oben_10-over.gif");
		Navigation2unten_05_over = newImage("images/Navigation2unten_05-over.gif");
		Navigation2unten_07_over = newImage("images/Navigation2unten_07-over.gif");
		Navigation2unten_09_over = newImage("images/Navigation2unten_09-over.gif");
		Navigation2unten_11_over = newImage("images/Navigation2unten_11-over.gif");
		Navigation2oben_05_en_over = newImage("images/Navigation2oben_05_en-over.gif");
		Navigation2oben_08_en_over = newImage("images/Navigation2oben_08_en-over.gif");
		Navigation2oben_10_en_over = newImage("images/Navigation2oben_10_en-over.gif");
		Navigation2unten_05_en_over = newImage("images/Navigation2unten_05_en-over.gif");
		Navigation2unten_07_en_over = newImage("images/Navigation2unten_07_en-over.gif");
		Navigation2unten_09_en_over = newImage("images/Navigation2unten_09_en-over.gif");
		Navigation2unten_11_en_over = newImage("images/Navigation2unten_11_en-over.gif");
		preloadFlag = true;
	}
}