$rs = mysql_query("SELECT * FROM dlo_navi_kat where Id=4");
while($row = mysql_fetch_array($rs)) { 
    echo $row['Name']."
";
   makeNav($row['Id'], 1);
}


function makeNav($parent_id, $level) {

 $sql = "SELECT * from dlo_navi_kat WHERE parent_id=$parent_id";
 $rs = mysql_query($sql);
 while($row = mysql_fetch_array($rs))
  {
     echo $row['Name']. "
";
     makeNav($row['Id'], $level+1);
}

}

makeNav(0,0);

  $rs = mysql_query("SELECT * FROM dlo_navi_kat where Id=4");
while($row = mysql_fetch_array($rs)) {
    echo $row['Name']."
";
   makeNav($row['Id'], 1);
}


function makeNav($parent_id, $level) {
echo "<form method=\"POST\" action=\"$PHP_SELF\">";
echo "

<select size=\"15\" name=\"D1\">";
 $sql = "SELECT * from dlo_navi_kat WHERE parent_id=$parent_id";
 $rs = mysql_query($sql);
 while($row = mysql_fetch_array($rs))
  {

     echo "<option value=".$row['Name']." >" .$row['Name']. "</option>";
     makeNav($row['Id'], $level+1);
}
echo "<option>2</option>";
echo "<option>2</option>";
echo "</select>";
echo "</p>";
echo "

<input type=\"submit\" value=\"Abschicken\" name=\"B1\"></p>";
echo "

</p>";
echo "

<input type=\"reset\" value=\"Zurücksetzen\" name=\"B2\"></p>";
echo "</form>";
}

makeNav(0,0);

   function buildSelect( $_selectConfig, $_data )
   {
        $selectHTML = '<select name="' . $_selectConfig['name'] . '" size="' . $_selectConfig['size'] . '">';
        $selectHTML .= "\n";

        for ( $i = 0; $i < count($_data); $i++ )
        {
             $selected = ( strcmp($_selectConfig['selected'], $_data[$i]->name) == 0 ) ? 'selected' : '';

             $selectHTML .= '<option ' . $selected . ' value="' . $_data[$i]->id . '">' . $_data[$i]->name . '</option>';
             $selectHTML .= "\n";
        }

        $selectHTML .= '</select>';

        return $selectHTML;
   }

  $rs = mysql_query("SELECT * FROM dlo_navi_kat where Id=4"); 
while($row = mysql_fetch_array($rs)) { 
    echo $row['Name']."
"; 
   makeNav($row['Id'], 1); 
} 


function makeNav($parent_id, $level) { 
   $_data = array();

 $sql = "SELECT * from dlo_navi_kat WHERE parent_id=$parent_id"; 
 $rs = mysql_query($sql); 
 while($data= mysql_fetch_array($rs)) 
  { 
   array_pop($_data);

   $_selectConfig = array( 'name' => 'selectDemoListe',
                                         'size' => 1,
                                         'selected' => Ben );

   echo buildSelect( $_selectConfig, $_data )

     makeNav($row['Id'], $level+1); 
} 

} 

makeNav(0,0);