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_about_eps_over = newImage("/images/nav-about-eps-over.gif");
		nav_practice_areas_over = newImage("/images/nav-practice-areas-over.gif");
		nav_services_over = newImage("/images/nav-services-over.gif");
		nav_clients_over = newImage("/images/nav-clients-over.gif");
		nav_portfolio_over = newImage("/images/nav-portfolio-over.gif");
		nav_team_over = newImage("/images/nav-team-over.gif");
		nav_resources_over = newImage("/images/nav-resources-over.gif");
		nav_contact_over = newImage("/images/nav-contact-over.gif");
		nav_client_login_over = newImage("/images/nav-client-login-over.gif");
		nav_whats_new_over = newImage("/images/nav-whats-new-over.gif");
		nav_employment_over = newImage("/images/nav-employment-over.gif");
		preloadFlag = true;
	}
}