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

function setCookie(n, v, expireDays)
{
    var e = new Date();
    e.setDate(e.getDate() + expireDays);
    document.cookie = n + "=" + escape(v) + ((expireDays == null) ? "" : ";expires=" + e.toGMTString());
}