[Plugin: NextGEN Gallery] Click to next picture thickbox

I’m using the latest versions of WP and NextGEN Gallery with the thickbox effect active. Simple edit. When someone clicks on the image inside the thickbox, i’d like it to move to the next image instead of closing the thickbox. I know I have to edit the thickbox.js file but i can’t see where. Basically, clicking the image runs the same function as clicking the little next button. I just want it to be easier to move to the next image.

Thanks!