idiot/unslider — pull request #49 by Aaron3 (2013-05-23 10:50:47+00:00)
Title: Add onStart option for callback before animation of each slide.

Used onStart to keep it short like the other options because "before" and "start" don't make much sense though beforeAnimate would be more accurate.

I needed this callback for a (forthcoming) simple plugin to extend unslider with thumbnail.