[Dillo-dev]Using alternate char for TABBING

I have recently discovered dillo and am delighted! Very fast and lightweight. We want to use if in a settop box application (thus the lightweight requirement). We need to interface to a IR remote control device so no keyboard are available. Web pages can normally be navigated with the TAB key. In our application we need to associate the TAB key with another key eg: ctrl-A. Do somebody know how, where to do this? I had a look in the code but I am not that strong on c++. ANY help will be appreciated! Thanks Deon