SplitBrowser is an application that will allows you to display multiple web pages on single window and with its help you can customize the size of each frame and display window into full screen mode.
This program helps you to setup an URL reload periodic function by opening 'Preferences', selecting 'Display' tab and filling 'Try to reload site each' field with the reload periodic (in seconds).
Moreover, if you want to display SplitBrowser's main window into full screen mode you must open 'Preference' and select 'Display window into full screen at startup'.