function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

function preloadImages() {
	if (document.images) {
		photogalleries_over = newImage("/images/photogalleries-over.gif");
		shows_over = newImage("/images/shows-over.gif");
		diving_over = newImage("/images/diving-over.gif");
		began_over = newImage("/images/began-over.gif");
		camera_over = newImage("/images/camera-over.gif");
		william_over = newImage("/images/william-over.gif");
		contact_over = newImage("/images/contact-over.gif");
	}
}

document.onload = function() {
	preloadImages();
}