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) {
		monate_01_januar_over = newImage("images/monate_01-januar_over.gif");
		monate_01_Februar_over = newImage("images/monate_01-februar_over.gif");
		monate_01_maerz_over = newImage("images/monate_01-maerz_over.gif");
		monate_01_april_over = newImage("images/monate_01-april_over.gif");
		monate_01_mai_over = newImage("images/monate_01-mai_over.gif");
		monate_01_juni_over = newImage("images/monate_01-juni_over.gif");
		monate_01_juli_over = newImage("images/monate_01-juli_over.gif");
		monate_01_august_over = newImage("images/monate_01-august_over.gif");
		monate_01_september_over = newImage("images/monate_01-september_over.gif");
		monate_01_oktober_over = newImage("images/monate_01-oktober_over.gif");
		monate_01_november_over = newImage("images/monate_01-november_over.gif");
		monate_01_dezember_over = newImage("images/monate_01-dezember_over.gif");
		preloadFlag = true;
	}
}