https://ecamm.com/js/header.js

1// header transition
2$(function() {
3
4	if (window.getComputedStyle(document.getElementById('topheader')).position != "fixed")
5		return;
6	
7	var header = $('.white-header');
8	var hidethis = $('#hidethis');
9
10	$(window).scroll(function() {
11		var scroll = $(window).scrollTop();
12		
13		if (scroll > 150) {
14			header.removeClass('white-header').addClass('opaque-header');
15			hidethis.addClass('hideme');
16		} else {
17			header.removeClass('opaque-header').addClass('white-header');
18	               hidethis.removeClass('hideme');
19		
20}
21		
22	});
23	
24});