Попробуйте вот так, когда посмотрите отредактируйте как Вам надо.
{/foreach}
</td>
<td class="cart_quantity">
<div style="float:right">
<a rel="nofollow" class="cart_quantity_delete" id="{$product.id_product}_{$product.id_product_attribute}_{$id_customization}" href="{$link->getPageLink('cart.php', true)}?delete&id_product={$product.id_product|intval}&ipa={$product.id_product_attribute|intval}&id_customization={$id_customization}&token={$token_cart}"><img src="{$img_dir}icon/delete.gif" alt="{l s='Delete'}" title="{l s='Delete this customization'}" width="11" height="13" class="icon" /></a>
</div>
{* <div id="cart_quantity_button" style="float:left">
<a rel="nofollow" class="cart_quantity_up" id="cart_quantity_up_{$product.id_product}_{$product.id_product_attribute}_{$id_customization}" href="{$link->getPageLink('cart.php', true)}?add&id_product={$product.id_product|intval}&ipa={$product.id_product_attribute|intval}&id_customization={$id_customization}&token={$token_cart}" title="{l s='Add'}"><img src="{$img_dir}icon/quantity_up.gif" alt="{l s='Add'}" width="14" height="9" /></a><br />
{if $product.minimal_quantity < ($customization.quantity -$quantityDisplayed) OR $product.minimal_quantity <= 1}
<a rel="nofollow" class="cart_quantity_down" id="cart_quantity_down_{$product.id_product}_{$product.id_product_attribute}_{$id_customization}" href="{$link->getPageLink('cart.php', true)}?add&id_product={$product.id_product|intval}&ipa={$product.id_product_attribute|intval}&id_customization={$id_customization}&op=down&token={$token_cart}" title="{l s='Subtract'}">
<img src="{$img_dir}icon/quantity_down.gif" alt="{l s='Subtract'}" width="14" height="9" />
</a>
{else}
<a class="cart_quantity_down" style="opacity: 0.3;" id="cart_quantity_down_{$product.id_product}_{$product.id_product_attribute}_{$id_customization}" href="#" title="{l s='Subtract'}">
<img src="{$img_dir}icon/quantity_down.gif" alt="{l s='Subtract'}" width="14" height="9" />
</a>
{/if}
</div>
<input type="hidden" value="{$customization.quantity}" name="quantity_{$product.id_product}_{$product.id_product_attribute}_{$id_customization}_hidden"/>
<input size="2" type="text" value="{$customization.quantity}" class="cart_quantity_input" name="quantity_{$product.id_product}_{$product.id_product_attribute}_{$id_customization}"/>
*} </td>
<td class="cart_total"></td>
</tr>
{assign var='quantityDisplayed' value=$quantityDisplayed+$customization.quantity}
{/foreach}
Меня такая конфигурация устраивает.