I'm working on a tool that will export financial transactions from mBank to OFX file that you'll be able to use in a budgeting software like You Need A Budget.
Here's an example how to inject additional JavaScript to WebKit's WebView.
On this page of the site you can watch the video online Filling form in WebKit using injected JavaScript with a duration of hours minute second in good quality, which was uploaded by the user Pawel Niewiadomski 26 August 2012, share the link with friends and acquaintances, this video has already been watched 913 times on youtube and it was liked by 0 viewers. Enjoy your viewing!