function closePopup() {
  document.getElementById('popup').style.display = 'none';
  setCookie('valachyPopup', 'hide', 1);
}

function setCookie(name, value, expires, path, domain, secure) {
	var today = new Date();
	today.setTime(today.getTime());

	if(expires) {
		expires = expires * 1000 * 60 * 60 * 24;
  }

	var expiresDate = new Date(today.getTime() + expires);

  document.cookie = name + '=' + escape(value) + (expires ? ';expires=' + expiresDate.toGMTString() : '') + (path ? ';path=' + path : '') + (domain ? ';domain=' + domain : '') + (secure ? ';secure' : '');
}