(function (dj) {

dj.getCookie = function (name) {
  var start = document.cookie.indexOf(name + "=");
  var len = start + name.length + 1;
  if ((!start) && (name != document.cookie.substring( 0, name.length ))) {
    return null;
  }
  if (start == -1) return null;
  var end = document.cookie.indexOf( ";", len );
  if (end == -1) { 
    end = document.cookie.length;
  }
  return unescape(document.cookie.substring(len, end));
}

dj.deleteCookie = function (name, path, domain) {
  if (dj.getCookie(name)) {
      document.cookie = name + "=" +
                        ((path) ? ";path=" + path : "") +
                        ((domain) ? ";domain=" + domain : "" ) +
                        ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
  }
}

})(window.dj);