} else {
            //if rollback, I should change the default checked radio button
            //find userid
            $target_user = $db->get_row("SELECT user_id FROM colfusion_users WHERE user_login = '******'");
            $target_user_id = $target_user->user_id;
            //echo $target_user_id;
            $sql_update = "UPDATE wiki_history ";
            $sql_update .= "SET checked = true ";
            $sql_update .= "WHERE sid = {$link_id} and field = 'tags' and timestamp = '{$modified_date}' and user_id = {$target_user_id} ";
            $db->query($sql_update);
        }
    }
}
//added by Jason
$notificationDAO = new NotificationDAO();
$notificationDAO->addEditNTFtoDB($link_id);
//echo $str."<br/>";
/*
error_reporting(E_ALL ^ E_DEPRECATED);
$con = mysql_connect($servername,$username,$password);
if (!$con){
    die('Could not connect: ' . mysql_error());
    //echo 'fail to connect';
} else {
    mysql_select_db($database,$con);
    $sql_select = " SELECT content
                    FROM description
                    WHERE id=(SELECT MAX(id)
                              FROM description)";
    if (!mysql_query($sql_select,$con)) {
        die('Error: ' . mysql_error());
function addEditNTFtoDB()
{
    $notificationDAO = new NotificationDAO();
    $link_id = $_GET["link_id"];
    echo $notificationDAO->addEditNTFtoDB($link_id);
}