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) {
		default_01_im_kanban_over = newImage("/images/default_01-im_kanban_over.jpg");
		default_01_im_contact_us_over = newImage("/images/default_01-im_contact_us_ov.jpg");
		default_01_im_equipment_over = newImage("/images/default_01-im_equipment_ove.jpg");
		default_01_im_products_over = newImage("/images/default_01-im_products_over.jpg");
		default_01_im_about_us_over = newImage("/images/default_01-im_about_us_over.jpg");
		default_01_im_shop_layout_over = newImage("/images/default_01-im_shop_layout_o.jpg");
		default_01_im_customer_focus_over = newImage("/images/default_01-im_customer_focu.jpg");
		default_01_im_company_information_over = newImage("/images/default_01-im_company_infor.jpg");
		preloadFlag = true;
	}
}