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) {
		home_over = newImage("/images/nav/home_over.gif");
		directions_over = newImage("/images/nav/directions_over.gif");
		opening_hours_over = newImage("/images/nav/opening_hours_over.gif");
		member_area_over = newImage("/images/nav/member_area_over.gif");
		testimonials_over = newImage("/images/nav/testimonials_over.gif");
		guest_pass_over = newImage("/images/nav/guest_pass_over.gif");
		weight_management_programme_over = newImage("/images/nav/weight)_management_programme_over.gif");
		gift_certificates_over = newImage("/images/nav/gift_certificates_over.gif");
		calendar_girls_over = newImage("/images/nav/calendar_girls_over.gif");
		newsletter_over = newImage("/images/nav/newsletter_over.gif");		
		charities_over = newImage("/images/nav/charities_over.gif");
		contact_us_over = newImage("/images/nav/contact_us_over.gif");
		curves_smart_over = newImage("/images/nav/curves_smart_over.gif");
		preloadFlag = true;
	}
}