nav_cart = new Image();
nav_cart.src = "images/nav_cart_on.gif";

nav_checkout = new Image();
nav_checkout.src = "images/nav_checkout_on.gif";

nav_home = new Image();
nav_home.src = "images/nav_home_on.gif";

nav_about = new Image();
nav_about.src = "images/nav_about_on.gif";

nav_policies = new Image();
nav_policies.src = "images/nav_policies_on.gif";

nav_contact = new Image();
nav_contact.src = "images/nav_contact_on.gif";

shop_transmitters = new Image();
shop_transmitters.src = "images/shop_transmitters_on.gif";

shop_keypads = new Image();
shop_keypads.src = "images/shop_keypads_on.gif";

shop_carriages = new Image();
shop_carriages.src = "images/shop_carriages_on.gif";

shop_other = new Image();
shop_other.src = "images/shop_other_on.gif";

shop_boards = new Image();
shop_boards.src = "images/shop_boards_on.gif";

shop_gears = new Image();
shop_gears.src = "images/shop_gears_on.gif";

shop_cells = new Image();
shop_cells.src = "images/shop_cells_on.gif";

shop_door_parts = new Image();
shop_door_parts.src = "images/shop_door_parts_on.gif";

shop_operator_parts = new Image();
shop_operator_parts.src = "images/shop_operator_parts_on.gif";