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_prod_over = newImage("images/nav_prod_over.jpg");
		nav_wellness_over = newImage("images/nav_wellness_over.jpg");
		nav_contact_over = newImage("images/nav_contact_over.jpg");
		nav_research_over = newImage("images/nav_research_over.jpg");
		nav_shopping_over = newImage("images/nav_shopping_over.jpg");
		preloadFlag = true;
	}
}

function guarantee(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=530,height=300');");
}