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) {
	
		menu_service003 = newImage("../images/menu_service_on.gif");
		menu_product006 = newImage("../images/menu_product_on.gif");
		menu_shop009 = newImage("../images/menu_access_on.gif");
		menu_support012 = newImage("../images/menu_support_on.gif");
		menu_online015 = newImage("../images/menu_online_on.gif");
		menu_price018 = newImage("../images/menu_price_on.gif");
		
		menu_top021 = newImage("../images/menu_service_on.gif");
		menu_profile024 = newImage("../images/menu_product_on.gif");
		menu_message027 = newImage("../images/menu_access_on.gif");
		menu_history030 = newImage("../images/menu_support_on.gif");
		menu_philosophy033 = newImage("../images/menu_online_on.gif");
		menu_recruit036 = newImage("../images/menu_price_on.gif");
		
		preloadFlag = true;
	}
}

preloadImages();