FurAffinity has a so-so webcomic navigation that involves scrolling down to the comic description and clicking the "<<< PREV | FIRST | NEXT >>>" links (Assuming the artist put them in the description).
This script detects whether such links are on the page, and if so, creates a button that when clicked will fill up the page with the remaining comics in the series.
So if you're on the second page of a 5 page comic, and click the button under the page, the remaining 3 comic pages will load and appear below the second page, so you can read the rest of the comic just by scrolling.
Improved the Original Script by TheSofrox to find the Next Page more reliably and also
to stop loading if the same Page gets loaded multiple times (To prevent infinite loading). I also added the Option to show / hide the corresponding Links to the comic pages.
PS: I don't know how to JavaScript but with enough Googling i managed to make this work xD