Don't think so...anyone else know? Sprint has the titan program to run java programs (like Opera Mini I think), but I don't think it enables java applets in the browser. I hate everything to do with Java so I avoid it like the plague.
You could do what I did, install ZoneMinder on a server at home and then use ZM4PPC to view the live feed from your cams.
But that's a discussion for another day. Try looking outside the intrepid forum; this would be a general WM6.1 or WM6.5 question and you might have more success with a broader audience.