<?php
$result = mysql_query ("SELECT id,marka,type,tarif,opisanie FROM avto",$db); 
echo "<table align='center' class='avto'>"; 
$i=1;
$myrow = mysql_fetch_array ($result); 
do {
printf(($i%2==0?"":"<tr>")."<td class='avto_title'> 
<p class='avto_name'>Автомобиль: <a href='view_avto.php?id=%s'>%s</a></p> 
<p class='avto_adds'>Тип: %s</p> 
</td>".($i%2==0?"</tr>":""), $myrow["id"], $myrow["marka"],$myrow["type"]); 
$i++;
} while ($myrow = mysql_fetch_array ($result));
echo ($i%2==0?"<td></td></tr>":"")."</table>";
?>