Docmunets tab for product description : essential one

Greetings,
Thanks for the great effort you are doing. I wonder if there is an extension to add document tab to the product description. Some products likes books, you want to show real pages, like the index , so it is appealing and essential to have a new tab for documents.It would be wonderful if the extension is flexible enough to enter the document code and it shows up , whither is it on Scribd , Slideshare, Google or whatever.
What do you think guys?

here is a module that will do that. you can insert images and they should show in the tab.

http://www.opencart.com/index.php?route ... on_id=5557

Thanks a lot