function getCookie(c_name)
{
    if (document.cookie.length>0)
    {
        c_start = document.cookie.indexOf(c_name + "=");

        if (c_start != -1)
        {
            c_start = c_start + c_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 "";
}

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

    exdate.setDate(exdate.getDate() + expiredays);

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