Bootstrap offers many different types of navigation - the quintessential across-the-top navigation bar is easily made static or fixed via css, and can easily have both left- and right- oriented elements, as well as drop-downs. Menus easily collapse to the famous 'hamburger' on a phone.
http://getbootstrap.com/components/#navbarThese exercises were drawn from here:
http://getbootstrap.com/getting-started/#examples-navbarssee 00_resources/cdn_js.txt and 00_resources/cdn_js.txt for quick copy/paste of js and css resources