Pie Menu -vs- Linear Menu Experiment

This is a re-creation in OpenLaszlo of the experiment comparing pie menus and linear menus, described in the paper "A Comparative Analysis of Pie Menu Performance", by Jack Callahan, Don Hopkins, Mark Weiser and Ben Shneiderman. It administers and times the same sequences of pie menus and linear menus as the experiment.

This version measures the selection time and error rate, but doesn't collect or display the information. If I can find the time, I'll extend this to consentually collect usage statistics on the server, and plot graphs of selection time and error rate, as shown in the paper.