stickyNav: easy jQuery horizontal sticky function

jquery.stickyNav.js

/**
 * jquery.stickyNav.js
**/
var stickyNav = function(elem,offset){
	$(window).scroll(function(){
		if( $(window).scrollTop() > offset ) {
			elem.css({position: 'fixed', top: 0, 'z-index': 99});
		} else {
			elem.css({position: 'static', top: 0});
		}
	});
}
// END

/**
 * Use: 
 * stickyNav(elem,offset):
 * 
 * elem: jQuery object that get glued to top viewport
 * offset: distance to top
 * 
**/
var stickyElem 	= $('#sticky-nav'),
	stikyOffset = stickyElem.offset().top;
	
stickyNav(stickyElem,stikyOffset);