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) {
		nav_home003 = newImage("images/interface2/nav_home-03.jpg");
		nav_residential005 = newImage("images/interface2/nav_residential-05.jpg");
		nav_commercial007 = newImage("images/interface2/nav_commercial-07.jpg");
		nav_services009 = newImage("images/interface2/nav_services-09.jpg");
		nav_about_us011 = newImage("images/interface2/nav_about_us-11.jpg");
		nav_faq013 = newImage("images/interface2/nav_faq-13.jpg");
		nav_landscaping015 = newImage("images/interface2/nav_landscaping-15.jpg");
		nav_references017 = newImage("images/interface2/nav_references-17.jpg");
		nav_contact019 = newImage("images/interface2/nav_contact-19.jpg");
		nav_resources021 = newImage("images/interface2/nav_resources-21.jpg");
		preloadFlag = true;
	}
}