X-Cart forums - [Product Page] Tab for Short Description/Detailed Description

I wanted to add a tab in product page. It is called Description. If Short description or Detailed description variables are not empty to show one of them or both (if available) inside this tab.

I did this task easy:

1) I edit include/product_tabs.php as following:

after (line 50 v4.5.5 Gold+):

PHP Code:


		
			
$product_tabs = array();

I added:

PHP Code:


		
			
$empty_descr        = $GLOBALS['smarty']->_tpl_vars['product']['descr'];

$empty_fulldescr    = $GLOBALS['smarty']->_tpl_vars['product']['fulldescr'];



if(!empty($empty_descr) || !empty($empty_fulldescr)){

        $product_tabs[] = array(

        'title'  => func_get_langvar_by_name('lbl_description'),

        'tpl'    => 'customer/main/product_descr.tpl',

        'anchor' => 'descr'

    );

}

2) I created a smarty template inside /common_files/customer/main/product_descr.tpl with the following content:

PHP Code:


		
			
{*

c863034063dde05a16bb4f2a2984f56cd779cc10, v1 (xcart_4_5_5), 2013-05-01 14:29:28, product_descr.tpl, random

vim: set ts=2 sw=2 sts=2 et:

*}



{if $product.descr}

    <strong style="font-size:14px;">{$product.descr}.</strong>

{/if}

{$product.fulldescr}

but ...

QUESTION: I would like to ask an expert if I have already Short Description and Full Description available as PHP variables inside product_tabs.php file, and not using $GLOBALS (as I did above). Just a simple array $product['fulldescr']. Without adding no other statements!