cookiemonster.js

var Cookie = {
    /**
     * Create a cookie
     *
     * @param {string} name
     * @param {mixed}  value
     * @param {string} days  optional value
     */
    set: function(name, value, days) {
        var expires = "";

        if (days) {
            var date = new Date();

            // calculate the days into seconds... mili seconds?
            date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
            expires = "; expires=" + date.toGMTString();
        }

        document.cookie = name + "=" + value + expires + "; path=/";
    },

    /**
     * Get the cookie value
     * @param  {string} name
     * @return {mixed}
     */
    get: function(name) {
        var start;
        var end;

        if(document.cookie.length <= 0) {
            return "";
        }

        start = document.cookie.indexOf(name + "=");

        if (start == -1) {
            return "";
        }

        start = start + name.length + 1;
        end = document.cookie.indexOf(";", start);
        if (end == -1) {
            end = document.cookie.length;
        }

        return unescape(document.cookie.substring(start, end));
    }
};