Contagem de Produtos

[Marcos Coelho2 2]

Tenho um código que conta os produtos relacionados de uma loja, e quanto mais produtos relacionados a um único produto, a página vai ficando mais e mais lenta.

Gostaria de ajuda para limitar a 18 produtos, segue o código:

<?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Academic Free License (AFL 3.0)
 * that is bundled with this package in the file LICENSE_AFL.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/afl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category    design
 * @package     base_default
 * @copyright   Copyright (c) 2009 Irubin Consulting Inc. DBA Varien (http://www.varien.com)
 * @license     http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
 */

/**
 * Shoping cart sidebar
 *
 * @see Mage_Checkout_Block_Cart_Sidebar
 */

$title = $this->getTitle();
$le = $this->getBoughtProducts();

$lecount=count($le );
?>
<?php if($this->getEnable()){ ?>
<div class="box-collateral box-up-sell">

    <?php if($lecount>0): ?>
    <div class="box-title">
        <strong><span><?php echo $title; ?>
            <small><?php echo $this->__('(%d)', $lecount) ?></small>
        </span></strong>
    </div>
    <?php endif; ?>
    <div class="products-grid" id="upsell-product-table2">
    	<div id="slideshow2" class="slideshow2">
    		<div class="slideshow-box">
                <?php if($lecount>0): ?>
                <ul style="padding-left:20px;overflow:hidden;" class="espaco-produto">

                    <?php foreach ($le as $_index => $_item) {  ?>
                        <?php
                            if (!isset($_productNameStripped)) $_productNameStripped= '';
                            if (!isset($freeShippingText)) $freeShippingText= '';
                        ?>
                        <li style="max-height:230px;">

                            <a href="<?php echo $_item->getProductUrl() ?>" class="product-image">
                                <img src="<?php echo $this->helper('catalog/image')->init($_item, 'thumbnail')->resize(130); ?>" alt="<?php echo $this->htmlEscape($_item->getName()) ?>" width="90" height="90" />
                            </a>

                            <div style="width:100%;" class="product-detail-slide" >

                                <p class="tituloproduto"><a href="<?php echo $_item->getProductUrl() ?>"><?php echo $this->htmlEscape($_item->getName()) ?></a></p>
                                <?php echo $this->getPriceHtml($_item) ?>
                				<?php if($_item->isSaleable()): ?>
                                    <div class="clear"  ></div>
                    				<p style="float:left;margin-top:-17px;" class="learn-more"><span class="free-shipping-message"><a href="<?php echo $_item->getProductUrl() ?>" title="<?php echo $_productNameStripped ?>"><?php echo $freeShippingText; ?></a></span></br><a href="<?php echo $_item->getProductUrl() ?>" title="<?php echo $_productNameStripped ?>" class="link-learn">Mais Detalhes</a>
                                    </p>
                                <?php endif; ?>

                            </div>
                        </li>
                    <?php } ?>
                </ul>
                <?php endif; ?>
            </div>

            <a href="#" style="z-index:1;" class="previous">Previous</a>
        			<a href="#" style="z-index:9999;" class="next">Next</a>
        </div>
    </div>
</div>

<?php } ?>