Hi, my zencart theme is having an issue with IE and Firefox, whenever somebody clicks "View larger image" it opens up a new window, but no scroll bars come up, if anyone can tell me where I can find the stylesheet I can edit it;

Example
http://tubebackgrounds.co.uk//index....&products_id=6

If you click "View Larger image" you shall see my issue.

Now, I have two ideas on fixing but I have no idea where to find the necessary files...

- Open the image in a new tab
- Scroll bars

Thanks.