[TYPO3-shop] Extra parameters in product link

[Juan Pablo Villaverde]

Great, it worked fine, thanks Franz!

>> I need to add an extra parameter in the product links in my PRODUCT LIST
>> page.
>> Actually I need to add  &tx_ttproducts_pi1[cat]=2 at the end of each 
>> link.

> Such a parameter as tx_ttproducts_pi1[cat] must be added at the call of
> function getLinkParams parameter $addQueryString.