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/art_nav/home-over.gif");
		gallery_over = newImage("images/art_nav/gallery-over.gif");
		resume_over = newImage("images/art_nav/resume-over.gif");
		press_over = newImage("images/art_nav/press-over.gif");
		cart_over = newImage("images/art_nav/cart-over.gif");
		toys_over = newImage("images/art_nav/toys-over.gif");
		wip_over = newImage("images/art_nav/wip-over.gif");
		art_prev_over = newImage("images/art_prev-over.gif");
		art_next_over = newImage("images/art_next-over.gif");
		preloadFlag = true;
	}
}