I eschew buttons and Xara's NavBar approach as being clunky and not in fitting with current web design.
Feel free to argue.

Here is a design approach that you can adapt:
  • Buttonless - just using Xara's Themed colours, a set of words and a background NavBar that are all Sticky.
  • Sub-Menus - same approach with in-line jQuery Links and a dash of CSS coding.

The design file: CSS&JS - Modern Menu.xar

Enjoy.

Acorn