// STICKY TOP NAVIGATION

var navPosition = $('#navigation').offset().top + $('#navigation').height();
    $window = $(window);

var stickyNavigation = $('.sticky-navigation');
var stickyNavIsShown = false;

$window.scroll(function() {
    if ( $window.scrollTop() >= navPosition && $(window).width() >= 900 ) {

        if(stickyNavIsShown == false){
            stickyNavigation.animate({opacity: 1, top: '0px'}, 150);
            stickyNavigation.addClass('active');
        }

        stickyNavIsShown = true;
    }
    else{
        if(stickyNavIsShown == true){
            stickyNavIsShown = false;
            stickyNavigation.animate({opacity: 0, top: '-100px'}, 150);
            // stickyNavigation.removeClass('active');
        }
    }
});