Make top Navigation 'sticky'

[RESL]

JavaScript Reference; Initializing
The file foundation.sticky.js must be included in your JavaScript to use this plugin, along with foundation.core.js. This plugin also requires these utility libraries:

foundation.util.triggers.js
foundation.util.mediaQuery.js

var elem = new Foundation.Sticky(element, options);

see: http://foundation.zurb.com/sites/docs/sticky.html