function toggleHeaderCookie(state) {
	let xhr = new XMLHttpRequest();
	xhr.open('POST', '{{ url("set_session:index") }}', true);
	xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	xhr.setRequestHeader('X-CSRFToken', '{{ csrf_token }}');
	xhr.send('hide_header=' + state);
	}
function toggleHeader() {
	if (document.getElementById('header').style.display == 'initial') {
		document.getElementById('header').style.display = 'none';
		document.getElementById('headerHidden').style.display = 'initial';
		toggleHeaderCookie('on');
	}
	else {
		document.getElementById('header').style.display = 'initial';
		document.getElementById('headerHidden').style.display = 'none';
		toggleHeaderCookie('off');
	}
}