?> <?php $letter = trim($letter); $disabledClass = null; $activeClass = null; if ($availLetter[$i] != true) { $disabledClass = ' disabled'; } if ($this->char == $letter) { $activeClass = ' active'; } ?> <li> <a<?php if ($availLetter[$i] != false && $this->char != $letter) { echo ' href="' . JRoute::_(TZ_Portfolio_PlusHelperRoute::getLetterRoute('portfolio', $letter)) . '"'; } ?> class="btn-sm<?php echo $disabledClass . $activeClass; ?> "><?php echo mb_strtoupper(trim($letter)); ?> </a> </li> <?php } } ?> </ul>