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(imageset) {
	if (document.images) {
	switch(imageset) {
		case("main"):
		about_curves_over = newImage("/images/nav/about_curves_over.gif");
		locations_over = newImage("/images/nav/locations_over.gif");
		weight_management_over = newImage("/images/nav/weight_management_over.gif");
		request_information_over = newImage("/images/nav/request_information_over.gif");
		home_over = newImage("/images/nav/home_over.gif");
		
		legal_over = newImage("/images/footer/legal_over.gif");
		privacy_over = newImage("/images/footer/privacy_over.gif");
		site_map_over = newImage("/images/footer/site_map_over.gif");
		site_credit_over = newImage("/images/footer/site_credit_over.gif");
		break;
		

		}
		preloadFlag = true;
	}
}