next/previous navigation across categories

Hi All,

I'm wondering if this is possible? I want to be able to use the next/previous navigation to also navigate across sibling categories?

Perhaps I ought to explain a little. As I understand it, next/previous on the product info page will find the next/prev product belonging to that category. It will then loop thro' only the products belonging to that category.

What I want is that when there are no more products in the category, it will move onto the next category and point to the first product in that category.

Is this possible?

Thanks,
Eddie