Instead of displaying an empty page if no links are in a subcategory, I would like to display a message in that empty subcategory page. I don't mind the empty page displaying, I'd just like to insert a message with it, such as:
When I use this in the subcategory template, it shows up on the main category/subcategory listing under many links. I just want it to show up on that empty subcategory's page. I looked at the category.html and link.html templates, but I don't see a place to insert this code. Is there a better way to go about producing this message?

Thanks,
WG