[Xorlev]

Keep a running count. Here's a non-vBulletin example made with a loop:

PHP Code:

for ($i = 0; $i < 12 ; $i++) {
     $x++;

     if ($x == 5) {
          $x = 0;
          echo '<br />';
     }

     echo 'Element ' . $i + 1 . ' ';
} 


Basically all this code does is create a line break every 5 elements. Hopefully you can apply this towards your needs.