PDF File issue

[Revenant]

I have downloaded and integreated this module (the first file at bottom) from Oscommerce

addons.oscommerce.com/info/2807

Evertyhing seems to work except for the actual link since .html is added after the .pdf in link. I`m using SEO contribution and the original link looks like this with seo turned off:

http://www.test.com/index.php?main_page=images/test.pdf

And with SEO turned on:

http://www.test.com/images/test.pdf.html


The link in product info page is this

<a href="' . zen_href_link(DIR_WS_IMAGES . $product_info->fields['products_pdfupload']) . '">

Any Idea how to change the zen_href_link() function to make this work ?

All help is appreciated.