Currently Being ModeratedFeb 3, 2013 5:30 PM (in response to physicsAuthor)
If the widget works in Safari on an iPad then it should work in iBooks.
There are many issues with html widgets in IA and using local storage is one of them, but your 2.4MB should fit.
If the widget is using <frames> it will crash, you should use <iframe> instead.
hope this helps...