function setCookie()
{
    var rid=document.getElementById("rid0").value;
    if(rid != "")
    {
        var exdate=new Date();
        exdate.setDate(exdate.getDate()+28);
        document.cookie="rid="+rid+";expires="+exdate.toUTCString();
    }
}

function getCookie(form)
{
    if (document.cookie.length>0)
    {
        c_start=document.cookie.indexOf("rid=");
        if (c_start!=-1)
        {
            c_start=c_start + 4 ;
            c_end=document.cookie.indexOf(";",c_start);
            if (c_end==-1) c_end=document.cookie.length
            {
                form.rid.value=unescape(document.cookie.substring(c_start,c_end));
                return;
            }
        }
    }
    return;
}