$(document).ready(function(){

// Home Stick Nav

var nav_light = $('nav.nav-light');
var nav_dark = $('nav.nav-dark');
var nav_base = $('nav#main-navigation');
var nav_height = nav_base.height();
var search_bar = $("div#search_bar");

var main_content = $('div#jumbotron-text');

if(nav_light.length || nav_dark.length){

    var origOffsetY = main_content.offset().top - nav_height;

    function scroll() {

        if ( $(window).scrollTop() > origOffsetY) {
            if(nav_light.length){
                $('nav#main-navigation').removeClass('nav-light');
            }
            else{
                $('nav#main-navigation').removeClass('nav-dark');
            }
        }
        else {                
            if(nav_light.length ){
                $('nav#main-navigation').addClass('nav-light');
            }
            else{
                $('nav#main-navigation').addClass('nav-dark');
            }
        }
    }
    scroll();

    $(window).scroll(function(){
            scroll();
        });

    $(window).resize(scroll);
}

});