public void menuOptionRight() throws SlickException {
int actual_menu = this.actual_menu;
if (actual_menu < this.level_list.size() - 1) {
Image img1 = this.level_list.get(actual_menu);
Image img2 = this.level_list.get(actual_menu + 1);
String normal_name = getNormalName(img1.toString());
String selected_name = getSelectedName(img2.toString());
this.level_list.set(actual_menu, new Image(normal_name));
this.level_list.set(actual_menu + 1, new Image(selected_name));
this.color_menu_list.set(actual_menu, Color.black);
this.color_menu_list.set(actual_menu + 1, Color.yellow);
this.actual_menu++;
}
}
