[Wazowski]

Originally Posted by qualiteam

You should modify the "skin/common_files/customer/categories.tpl" template and add {if $c.categoryid eq $cat}style="font-style: bold;"{/if} condition into the category rendering loop.

Thank you Alex! But where is that 'category rendering loop'?

My code looks like that:

 
{if $categories_menu_list ne '' or $fancy_use_cache}
{capture name=menu}
{if $active_modules.Flyout_Menus}
  {include file="modules/Flyout_Menus/categories.tpl"}
  {assign var="additional_class" value="menu-fancy-categories-list"}
{else}
  <ul>
    {foreach from=$categories_menu_list item=c name=categories}
      <li{interline name=categories}><a href="home.php?cat={$c.categoryid}" title="{$c.category|escape}">{$c.category|amp}</a></li>
    {/foreach}
  </ul>
  {assign var="additional_class" value="menu-categories-list"}
{/if}
{/capture}
{include file="customer/menu_dialog.tpl" title=$lng.lbl_categories content=$smarty.capture.menu}
{/if}