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) {
		mu1_over = newImage("http://www.joink.nl/images/m1_on.gif");
		mu2_over = newImage("http://www.joink.nl/images/m2_on.gif");
		mu3_over = newImage("http://www.joink.nl/images/m3_on.gif");
		mu4_over = newImage("http://www.joink.nl/images/m4_on.gif");
		mu5_over = newImage("http://www.joink.nl/images/m5_on.gif");
		mu9_over = newImage("http://www.joink.nl/images/m9_on.gif");
		hmu1_over = newImage("http://www.joink.nl/images/designer_on.jpg");
		hmu2_over = newImage("http://www.joink.nl/images/furniture_on.jpg");
		preloadFlag = true;
	}
}