[Resolved] Complex While's & If's that display incorrectly

[Kudose]

I have this code:

<? 
include('top.php'); 
include('left.php'); 
include('dbinfo.inc.php'); 
echo" <td width='81%'><table><tr>"; 

$kind = $HTTP_GET_VARS['kind']; 
$query = mysql_query("SELECT * FROM auto WHERE kind='$kind'") or die(mysql_error()); 
$num=mysql_num_rows($query) or die(mysql_error()); 

$i=0;
while($i<$num)
{
  $cols = 1;   

  while($cols<=3) { 
    $row = mysql_fetch_array($query) or die(mysql_error()); 

$link = $row['stockid']; 
$year = $row['year']; 
$make = $row['make']; 
$model = $row['model']; 
$image = $row['image'];

echo "<td><a href='show.php?stockid=$link'><img src='$kind/$image' width='250' 
height='100'><br> $year $make $model </a></td>"; 
   $cols++;
     $i++;
  } if($num %3 == 0){ echo "</tr>"; } else{ echo "</tr><tr>"; }
} 
echo"</tr>
</table> 

</td></tr></table>
<table width='100%' border='0' background='images/bottombg.jpg'><tr>
              <td width='127%' height='15' style='text-align: center'><p align='center'><font size='1' face='Tahoma' color='#000000'><br>
        <strong>©2004 Boulevard Auto Sales, INC &amp; Spechal Effextc Design <br>
        This site is currently managed by <a href='mailto:[e-mail]' target='_blank'>Spechal 
        Effextc</a><br>Website best viewed with IE 6+ and 1024 x 768 resolution.</strong></font></p></td></tr>
    </table>
    </center></div></td>
  </tr> "; ?>
 <EMBED SRC="audio/thumbsaudio.mp3" AUTOSTART="true" HIDDEN="true">
</table></table>
</body>
</html> 

The way it is now, it the $num is a dirivative of 3 then everything is fine and it displays all 3 images to the row and give me my footer. But if it isnt...it doesnt display 3 full columns...then it will not display the last footer part of my page. It just stops after it displays the last 1 or 2 images of the row then gives a blank page. Any helps would be great, I have been battling this for days.

[Weedpacket]

echo "<table>";
for($i=0; $i<$num; ++$i)
{
	// At the start of the row: put a <tr>
	if($i%3==0) echo "<tr>";

// Put a cell
echo "<td>blahblahblah</td>";

// At the end of the row or the end of the list: put a </tr>
if($i%3==2 || $i==$num-1) echo "</tr>";
}
echo "</table>";

[Kudose]

Holy $h*t. You are the best.

THANKS!