Navigation menus have to be intuitive, precise and easy-to-use. One simple, basic principle, which is common for all kinds of nav bars you would ever want to use for your projects. In fact, navigation menu is probably the most important element in web design: after all, it is being used more often than any other element on a given page. Therefore it's important to make sure that your visitors will find they way around the site structure - however complex the latter might be. So how do desig...