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) {
		home_over = newImage("images/menu/home_over.jpg");
		verhuur_over = newImage("images/menu/verhuur_over.jpg");
		verkoop_over = newImage("images/menu/verkoop_over.jpg");
		producties_over = newImage("images/menu/producties_over.jpg");
		contact_over = newImage("images/menu/contact_over.jpg");
		tweedehands_over = newImage("images/menu/2ehands_over.jpg");
		offerte_over = newImage("images/menu/offerte_over.jpg");
		preloadFlag = true;
	}
}