$date = trim(mysql_prep($_POST['date']));
        $td = new T_data();
        $td->cus_id = $cus_id;
        $td->year_month = $year_month;
        $td->date = $date;
        $td->weight = $weight;
        global $database;
        $result = mysql_query("SELECT * FROM user WHERE id='{$cus_id}' AND  privilege='Customer'");
        $rowExist = mysql_num_rows($result) > 0;
        $rslt = "";
        if (!$rowExist) {
            echo '<script language="javascript">';
            echo 'alert("error! Invalied Customer ID!")';
            echo '</script>';
        } else {
            $rslt = $td->enter_t_data();
        }
        if ($rslt) {
            echo '<script language="javascript">';
            echo 'alert("Data entered successfully")';
            echo '</script>';
        } else {
            echo '<script language="javascript">';
            echo 'alert("error! Cannot enter data!")';
            echo '</script>';
        }
    }
} else {
    $cuz_id = "";
    $fer_type = "";
    $name = "";