php combobox yardım??

<form id="form3" name="form3" method="post" action="browse.php">
  <table width="100" border="0" cellspacing="0" cellpadding="0">
    <tr>
     
      <td width="100"><select name="c" id="c">
        <option value="mat" selected="selected">Kategoriler</option>
        
        
        <?php displaycategories_combo($userStatus);    ?>
      </select></td>
    </tr>
    <tr>
      <td>&nbsp;</td>
      <td>&nbsp;</td>
    </tr>
    <tr>
      <td>&nbsp;</td>
      <td><input type="submit" name="buton" id="buton" value="Git" /></td>
    </tr>
  </table>
</form>

function displaycategories_combo($userStatus) {

    if ($userStatus == '1') {
        $result = mysql_query("SELECT name, catid FROM categories WHERE status = '1' && parentcategory = '0' ORDER BY catorder, name");
    } else {
        $result = mysql_query("SELECT name, catid FROM categories WHERE status = '1' && permissions = '1' && parentcategory = '0' ORDER BY catorder, name");
    }
    if (mysql_num_rows($result)) {

    while($row = mysql_fetch_array($result)) {
    $categoryname = $row['name'];
    $categoryid = $row['catid'];
    if (isset($separator)) {
        echo '';
    }
    echo '<option value="'.$categoryid.'" >'.$categoryname.'</option>';
    
    
    $separator = "1";
    }

    unset ($separator);
  }
}