Add Add product to basket without refresh/redirect

[GoogleCodeExporter]

First of all thank you in advance for helping me on that:) 
My question is : Is there a way to Add Add product to basket without 
refresh/redirect? 
Can I modify my shopping_cart_products_controller.php at lines
"       if(!$this->RequestHandler->isAjax()) {
            $this->redirect($_SERVER['HTTP_REFERER']);
        }
"
site:http://www.artex-studio.com/Magniti-09-2--Izgledi-p-8666.html
What steps will reproduce the problem?
1.
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What is the expected output? What do you see instead?

What version of the product are you using? On what operating system?

Please provide any additional information below.

Original issue reported on code.google.com by du...@abv.bg on 3 Jan 2012 at 10:11