Dropdown probleem

<?
if(isset($_POST['submit'])){
$categorie = $_POST['menu'];
$regel = $_POST['regel'];
mysql_query("INSERT INTO regels(categorie,regel) values('$categorie','$regel')") or die(mysql_error());
echo"GELUK!";
}
?>
<tr><td><width="125">Categorie:</td>
<td>
<select name="menu">
<option value="1">Algemeen</option>
<option value="2">Spel</option>
<option value="3">Forum</option>
<option value="4">Chat</option>
</select></td></tr>
<tr><td><width="125">Regel :</td>
<td><textarea cols=40 rows=10 name="regel"></textarea></td></tr>
<tr><td><form method=post><input type="submit" name="submit" value="Voeg regel toe!"> 
</td></tr></form>

<?
if(isset($_POST['submit'])){
$categorie = $_POST['menu'];
$regel = $_POST['regel'];
mysql_query("INSERT INTO regels(categorie,regel) values('$categorie','$regel')") or die(mysql_error());
echo"GELUK!";
}
?>
<tr><td><width="125">Categorie:</td>
<td>
<form method="post">
<select name="menu">
<option value="1">Algemeen</option>
<option value="2">Spel</option>
<option value="3">Forum</option>
<option value="4">Chat</option>
</select></td></tr>
<tr><td><width="125">Regel :</td>
<td><textarea cols=40 rows=10 name="regel"></textarea></td></tr>
<tr><td><input type="submit" name="submit" value="Voeg regel toe!"> 
</td></tr></form>