If you find that the main window has no vertical scrollbar on a small ecreen device, I have posted a tip at my kanji blog : http://kanjirecog.blogspot.ca/2013/02/tagaini-jisho-scroll.html.
The solution is tested on an Ubuntu Gnome build : Precise Puppy linux 5.4.3 for x86 32-bit.
That X wm (JWM) has a "maximize-Y" option when you right-click in the top of the window frame ( I have my windows show their frame.)
I could not find another solution to view all of the kanji expressions on the main window ... but once done, I have JWM remember window coordinates, so the fix "sticks" thereafter.
If you have an old netbook, running tiny Precise Puppy in RAM gives you a fast Nihongo kanji e-dict device.
I load from a SanDisk FAST 32X Class 10 16G SD chip - so save my old SSD HD the wear and tear of writes.
With wi-fi off, battery endurance is good, too.
My Curl blog explains how to run my other kanji app's on a netbook with Puppy - also just great for learning JOYO kanji.
I am using a EeePC 900 Atom netbook without MS Windows.
I also boot Puppy "live" from a DVD on my 64-bit PC to run in RAM and write to the DVD.