i have asked this question here also but i didn\'t get any solution.so i am asking here again with the full explanation.
I downloaded EPub Reader library from here.
your tool bar is hiding being navigation bar since navigation bar is always on top you can add your tool bar as sub view of navigation bar i m not sure if it will work though best approch is use navigation bar and add item it it like left button right button and title stuff or you can add a view as subview of navigation bar i have done that before sample code
navBar=self.navigationController.navigationBar;
[navBar addSubview:statusBar];
statusBar.frame=f;
self.navigationController.navigationBar.translucent = YES;
here statusBar was a view was set up like your tool bar same size.