do you know the MicroEmulator http://www.microemu.org/ ?
It's quite easy to deploy a j2me jar and run it inside a webpage.
All you need is microemu-javase-applet.jar and your jar, and the following html lines:
MicroEmulator - TagsMe
This is an example of the TagsMe project.
You can try it here: http://home.versanet.de/~marco204/TagsMe.html
Now I tried it with the LWUITDemo.jar
This is my html:
MicroEmulator - LWUIT
You can try it on http://home.versanet.de/~marco204/LWUIT.html
BUT IT DOESNT WORK :((((
I tried it with my own little project, and it didnt work at all.
Who knows why?