This is a quick-and-dirty keyboard for the Norbert Lindenberg's Niji script. Norbert's font (Monnaka Plain) does all of the rendering work (which is impressive). This tool just lets you type in the script.
This script is encoded in the Unicode Private Use Area and will not render properly on most pages 1 unless you install the font 2
This page does have some bugs which I cannot for the life of me fix. Be warned.