[just_me]

I made a mod for showing bestsellers horizontally and have it working in 4.2.3 version.

I made a revised version of bestsellers.tpl called bestsellers_r.tpl.

{*
$Id: bestsellers_r.tpl,v 1.13 2009/11/26 bestsellers in a row Exp $
vim: set ts=2 sw=2 sts=2 et:
*}
{if $bestsellers}
  {capture name=bestsellers}
    <table class="rproducts">
<tr>
{section name=cat_num loop=$bestsellers}
<td>
      
        {if $config.Bestsellers.bestsellers_thumbnails eq "Y"}
           <a href="product.php?productid={$bestsellers[cat_num].productid} cat={$cat} bestseller=Y">
{include file="product_thumbnail.tpl" productid=$bestsellers[cat_num].productid product=$bestsellers[cat_num].product tmbn_url=$bestsellers[cat_num].tmbn_url}</a>
            <div class="details">
              <a class="product-title" href="product.php?productid={$bestsellers[cat_num].productid} cat={$cat} bestseller=Y">{$bestsellers[cat_num].product|escape}</a><br />
              {$lng.lbl_our_price}: {include file="currency.tpl" value=$bestsellers[cat_num].taxed_price}
            </div>
            <div class="clearing"></div>
          {else}
            <a class="product-title" href="product.php?productid={$bestsellers[cat_num].productid} cat={$cat} bestseller=Y">{$bestsellers[cat_num].product|escape}1</a><br />           
          {/if}
</td>
      {/section}
</tr>
    </table>
  {/capture}
  {include file="customer/dialog_nosort.tpl" title=$lng.lbl_bestsellers content=$smarty.capture.bestsellers}
{/if}

Then I modified the code on subcategories.tpl located here:

/customer/main/subcategories.tpl

I just modified the file name to bestsellers_r.tpl.

{if $active_modules.Bestsellers && $config.Bestsellers.bestsellers_menu ne "Y"}
  {include file="modules/Bestsellers/bestsellers_r.tpl"}
{/if}

See ya'