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) {
		spezialitaet_over = newImage("fileadmin/images/sorting_over.gif");
		referenzen_over = newImage("fileadmin/images/washing_over.gif");
		truppe_over = newImage("fileadmin/images/sackfilling_over.gif");
		sammelsurium_over = newImage("fileadmin/images/balepressing_over.gif");
		tourneen_over = newImage("fileadmin/images/warehousing_over.gif");
		preloadFlag = true;
	}
}