blank_welcome = new Image();
blank_welcome.src = 'images/menu_welcome.jpg';
blank_reservations = new Image();
blank_reservations.src = 'images/menu_reservations.jpg';
blank_about = new Image();
blank_about.src = 'images/menu_about.jpg';
blank_to_do = new Image();
blank_to_do.src = 'images/menu_to_do.jpg';