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) {
		domain_names_over = newImage("images/domain-names-over.jpg");
		linux_web_hosting_over = newImage("images/linux-web-hosting-over.jpg");
		windows_web_hosting_over = newImage("images/windows-web-hosting-over.jpg");
		dns_hosting_over = newImage("images/dns-hosting-over.jpg");
		website_design_over = newImage("images/website-design-over.jpg");
		anti_virus_software_over = newImage("images/anti-virus-software-over.jpg");
		hosting_email_support_over = newImage("images/hosting-email-support-over.jpg");
		about_newnet_over = newImage("images/about-newnet-over.jpg");
		preloadFlag = true;
	}
}