(function () {

        function getCookie(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));

        }

        function setCookie(name, value, expires, path, domain, secure) {

            var str = name + "=" + escape(value);

            if (expires > 0) {

                var date = new Date();

                date.setTime(date.getTime() + expires * 24 * 3600 * 1000);

                str += ";expires=" + date.toGMTString();

            }

            if (path) {

                str += ";path=" + path;

            }

            if (domain) {

                str += ";domain=" + domain;

            }

            if (secure) {

                str += ";secure=" + secure;

            }

            document.cookie = str;

        }

    })();