If you have such a device, please may you go to http://fancyapps.com (Fancybox 2 home page) and try out some of the examples on that page (photo image viewer in lightbox). Does it work?
I have every other mobile device possible (well, type of OS anyway - including BB 4.6, 5, 7 and PlayBook), but not BB10 and don't fancy the cost of getting one. I'm using the simulator on a Vista PC and the above link fails, yet works on every single one of my devices. I just don't trust simulators.
I think BB10 and Fancybox don't like each other.
Thanks in advance, and enjoy your BB... I actually think BB are on to something (and I've seen a lot of devices to know).