Please Help in this code navigation opti. are not working can you correect

[Sabaaqeel]

<?

require_once("conn.php");

include("function.php");

 

//get the categories

?>

<div class="fir">

            <h1>Categories</h1>

 

             

 

<div class="sidebarmenu">

            <ul id="sidebarmenu1">

              <?php

 

  $query_about_us=mysql_query("select * from devbg_categories where parent_id='0' and isactive='y'  order by orders asc");

 

while($query_aboutus_menu=mysql_fetch_array($query_about_us))

{

  ?>

              <li><a href="javascript:;"><?php echo $query_aboutus_menu['CategoryName'] ?></a>

                <?php

  $submenu = recursive_menu($query_aboutus_menu['CategoryID'], 0);

?>

              </li>

              <?php 

} ?>

            </ul>

        </div>

 

<div class="clear"></div>

</div>