bt_shop_on = new Image();
bt_shop_on.src = "images/bt_shop_on.jpg";
bt_shop_off = new Image();
bt_shop_off.src = "images/bt_shop_off.jpg";

bt_learn_on = new Image();
bt_learn_on.src = "images/bt_learn_on.jpg";
bt_learn_off = new Image();
bt_learn_off.src = "images/bt_learn_off.jpg";

bt_coffee_on = new Image();
bt_coffee_on.src = "images/bt_coffee_on.jpg";
bt_coffee_off = new Image();
bt_coffee_off.src = "images/bt_coffee_off.jpg";

bt_fr_on = new Image();
bt_fr_on.src = "en/images/entete/bt_francais_on.jpg";
bt_fr_off = new Image();
bt_fr_off.src = "en/images/entete/bt_francais_off.jpg";

bt_items_on = new Image();
bt_items_on.src = "en/images/entete/bt_items_on.jpg";
bt_items_off = new Image();
bt_items_off.src = "en/images/entete/bt_items_off.jpg";

bt_login_on = new Image();
bt_login_on.src = "en/images/entete/bt_login_on.jpg";
bt_login_off = new Image();
bt_login_off.src = "en/images/entete/bt_login_off.jpg";

bt_cc_on = new Image();
bt_cc_on.src = "en/images/entete/bt_cc_on.jpg";
bt_cc_off = new Image();
bt_cc_off.src = "en/images/entete/bt_cc_off.jpg";