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) {
		ui_nav_home_8 = newImage("image/ui-nav-home_8.gif");
		ui_nav_home_10 = newImage("image/ui-nav-home_10.gif");
		ui_nav_philosophy_9 = newImage("image/ui-nav-philosophy_9.gif");
		ui_nav_philosophy_11 = newImage("image/ui-nav-philosophy_11.gif");
		ui_nav_philosophy_13 = newImage("image/ui-nav-philosophy_13.gif");
		ui_nav_portfolio_12 = newImage("image/ui-nav-portfolio_12.gif");
		ui_nav_portfolio_14 = newImage("image/ui-nav-portfolio_14.gif");
		ui_nav_portfolio_16 = newImage("image/ui-nav-portfolio_16.gif");
		ui_nav_service_15 = newImage("image/ui-nav-service_15.gif");
		ui_nav_service_17 = newImage("image/ui-nav-service_17.gif");
		ui_nav_service_19 = newImage("image/ui-nav-service_19.gif");
		ui_nav_bio_18 = newImage("image/ui-nav-bio_18.gif");
		ui_nav_bio_20 = newImage("image/ui-nav-bio_20.gif");
		ui_nav_bio_22 = newImage("image/ui-nav-bio_22.gif");
		ui_nav_contact_21 = newImage("image/ui-nav-contact_21.gif");
		ui_nav_contact_23 = newImage("image/ui-nav-contact_23.gif");
		preloadFlag = true;
	}
}