function parseCookie() {
  if (!document.cookie) {
    return [];
  }
  var tokens = document.cookie.split("; ");
  var cookies = [];
  for (var i = 0; i < tokens.length; i++) {
    var c = tokens[i].split("=");
    cookies[c[0]] = c[1];
  }
  return cookies;
}

function deleteCookies() {
  if (!document.cookie) return;
  var cookies = document.cookie.split("; ");
  for (var i = 0; i < cookies.length; i++) {
    var name = cookies[i].split('=')[0];
    document.cookie = name + '=; expires=Fri, 31-Dec-1999 23.59.59 GMT;';
  }
}

function getWindowHeight() {
	return window.innerHeight || document.body.clientHeight;
}