function setCookie(name, value, expiredays)
{
    var exdate = new Date();

    exdate.setDate(exdate.getDate() + expiredays);
    document.cookie = name + "="  + escape(value) + ((expiredays==null) ? "" : ";expires=" + exdate.toUTCString());
}

function getCookie(name)
{
    if (document.cookie.length > 0) {
        c_start = document.cookie.indexOf(name + "=");
        if (c_start != -1) {
            c_start = c_start + name.length + 1;
            c_end = document.cookie.indexOf(";", c_start);
            if (c_end == -1) {
                c_end = document.cookie.length;
            }
            return unescape(document.cookie.substring(c_start, c_end));
        }
    }

    return "";
}