Scrolling

Add Class when Element hits top of browser

var homepageNav = $('.homepage-wrap');

if (homepageNav.length) {
   var homepageNavOffset = homepageNav.offset().top - 70;

   if ( docScroll >= homepageNavOffset ) {
	$('.homepage-wrap').addClass('tan');
   } else {
	$('.homepage-wrap').removeClass('tan');
   }
}