After upgrading bootstrap to version 2.3.0 I spent an evening trying to figure out what’s causing too much recursion error that was in the end crashing my entire browser when using lightbox or fancybox. Then I said - frak it, it’s time to get some rest and in the morning I decided to visit github issues section first - and let me say I should start there, because there it was - waiting for me - exactly the same problem with possible solution :P.