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_products_7 = newImage("image/ui-nav-products_7.gif");
		ui_nav_wheretobuy_8 = newImage("image/ui-nav-wheretobuy_8.gif");
		ui_nav_ecoverslatest_9 = newImage("image/ui-nav-ecoverslatest_9.gif");
		ui_nav_press_10 = newImage("image/ui-nav-press_10.gif");
		ui_nav_about_11 = newImage("image/ui-nav-about_11.gif");
		preloadFlag = true;
	}
}