I have the techni (i think thats right) browser and this doesn't work, but maybe its just because im stupid.
I heard both the techni browser and the 2.0 emulators supported Flash.
There is a place called: http://www.everyvideogame.com and they have emulators that run from java. They have lots of systems. They even have some GBA! GBA,NES,SNES, and more. I was wondering if this would work on either one of these browsers.
EDIT: They updated the website, so right now they only have SMS, Gamegear, Some old system (forget name), and NES