how to post, with user name

[pakzz]

Hei, how can i save username in my database?? whn you people log in i use SESSION to safe userid, but it don't take with user id in database, plzz help

[code]
<?php
session_start();

if($_SESSION['autentisert'] == false) {
  header('Location: logg_inn.php'); // Videresend til logg inn skjemaet
}

else {
if(isset($_POST['submit'])) {

$_SESSION['userid'];

$tittel = htmlentities($_POST['tittel']);
$innlegg = htmlentities($_POST['innlegg']);

if(!empty($tittel) and !empty($innlegg)){

// Conntecting database
include '../sql/config.php';

// Henter tittel og innlegg, og samtidig Unngår SQL-injection
$tittel = mysql_escape_string(trim($_POST['tittel']));
$innlegg = mysql_escape_string($_POST['innlegg']);


  $sql = "INSERT INTO blogg(tittel, innlegg, time)VALUES('".$tittel."', '".$innlegg."', now())";
  mysql_query($sql) or die("some wrong: ".mysql_error());

  mysql_close();
  
  header('Location: ../index.php');
}

    else {
  echo "<p><font color=\"red\">Fyll it all</font></p>";
   }
  

}
}
?>

<?php include 'include/topptekst.php'; ?>
<?php include 'templates/innlegg.tpl'; ?>
<?php include 'include/bunntekst.php'; ?>
[/code]

[trq]

Pardon?