I've set up colorbox to work with a slightly modified default theme. Instead of the image thumbnails linking to image.php, they link directly to the full-sized image which is displayed by colorbox.
While I'm comfortable with HTML and CSS, I only know enough PHP at this point to switch/replace functions, do simple navbars, etc. Gradually learning.
What I want to do here is have Colorbox include "Next" and "Previous" links or buttons linking to the corresponding image in sequence. Can see how 'getNextImageURL' works in image.php and also see the "rel" key on the Colorbox website, but am not sure how to make those work together. Can anyone point me in the right direction on this?