Tweak the comic nav.

Hi guys.
I'm loving Grawlix and no mistake. My site is coming on quite nicely.

I have a question about a tweak I'd like to make that I hope isn't too difficult to implement.

How do I amend the code in comic.nav so that, instead of only the links that are most relevant getting displayed, the links are ALWAYS displayed but greyed out when can't be clicked?

I hope that makes sense....

Many thanks.
Paul