ผมมี่ึคำถามมาอีก อีกครับ...ขอบพระคุณทุกท่านที่ชี้แนะ

<table width="18%" border="0" cellpadding="0" cellspacing="0">
<?php
include("config.inc.php");
$sql = "SELECT * FROM main_manu,manu1 WHERE m_m_id=m_m_m_id";
$result = mysql_query($sql);
$tempname="";
while($data = mysql_fetch_array($result)){
if($tempname!=$data["m_m_name"]){ 

?>
 <tr>
 <td width="24" height="22" bgcolor="#999999"><div align="center"><img src="icon/icon.jpg" width="13" height="12" /></div></td>
  <td width="153" bgcolor="#990000"><div align="center" class="style1"><?php echo "$data[m_m_name]"; $tempname=$data["m_m_name"]; } ?></div></td>
  </tr>
  <tr>
    <td colspan="2">
    <hr width="99%" style="border:1px dotted #333333">
    <?php echo "<img src='icon/arrow_142.gif' width='9' height='12'/> $data[m1_name]"; ?></td>
  </tr>
  <?php } ?>
   <tr>
    <td colspan="2"><hr width="99%" style="border:1px dotted #333333"></td>
  </tr>
</table>