var Cookie =
{
    setCookie: function (name, value, expiredays) {
        this.deleteCookie(name);
        // set time, it's in milliseconds
        var today = new Date();
        today.setTime(today.getTime());
        // if the expires variable is set, make the correct expires time, the
        // current script below will set it for x number of days, to make it
        // for hours, delete * 24, for minutes, delete * 60 * 24
        if (expiredays) {
            expiredays = expiredays * 1000 * 60 * 60 * 24;
        }
        var expires_date = new Date(today.getTime() + (expiredays));
        document.cookie = name + "=" + escape(value) + ";expires=" + expires_date.toGMTString() + ";path=/";
    },
    getCookieValue: function (check_name) {
        // first we'll split this cookie up into name/value pairs
        // note: document.cookie only returns name=value, not the other components
        var a_all_cookies = document.cookie.split(';');
        var a_temp_cookie = '';
        var cookie_name = '';
        var cookie_value = '';
        var b_cookie_found = false; // set boolean t/f default f

        for (i = 0; i < a_all_cookies.length; i++) {
            // now we'll split apart each name=value pair
            a_temp_cookie = a_all_cookies[i].split('=');

            // and trim left/right whitespace while we're at it
            cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');

            // if the extracted name matches passed check_name
            if (cookie_name == check_name) {
                b_cookie_found = true;
                // we need to handle case where cookie has no value but exists (no = sign, that is):
                if (a_temp_cookie.length > 1) {
                    cookie_value = unescape(a_temp_cookie[1].replace(/^\s+|\s+$/g, ''));
                }
                // note that in cases where cookie is initialized but no value, null is returned
                return cookie_value;
                break;
            }

            a_temp_cookie = null;
            cookie_name = '';
        }

        if (!b_cookie_found) {
            return null;
        }
    },
    deleteCookie: function (name) {
        if (this.getCookieValue(name)) document.cookie = name + "=" + ";path=/;expires=Thu, 01-Jan-1970 00:00:01 GMT";
    }
}