Joomla Module Class Suffix

The HTML you copy/pasted is for a hikashop menu, not a module. Module class suffixes are for module.
You can actually edit the module class suffix in the joomla options of the modules.
That's an option which is used by joomla to add a chrome around the module.

Usually, people add the suffix "_menu" for that in that field.

It's not meant to be used inside the module content.

This option is not used a lot and it totally handled by joomla. We just define it in the xml of the module. Which is why we decided to not display it in the hikashop interface. There are already plenty of options there.

So it's probably an issue with joomla 1.6. We'll look at it.

I just tried on joomla 1.6

I properly got the option for the modules in the joomla options. I also properly got the suffix in the class name of the module. It seems to be working properly for me.

I understand what you're talking about.

You're saying that the module class suffix is not set in the html of modules which are displayed in the component instead of being displayed directly in a position of the template. And that's normal.

The chrome html divs around modules are added by joomla. They are added based on the style attribute in templates :
<jdoc:include type="module" name="test" style="rounded" />

The possible values are rounded, table, horz, xhtml, plus any style defined in the template it self.
In the hikashop component, the style used is "none" which doesn't add any chrome around the modules. And thus, you don't see the module class suffix. That's by the way the same in joomla 1.5 and 1.6

If you want to change that, you can edit the files show and listing of the views product, and the file listing of the view category (via the menu Display->Views of HikaShop).
Near the bottom of those files you will find the line:

echo JModuleHelper::renderModule($module);

echo JModuleHelper::renderModule($module,array('style'=>'xhtml'));