Detecting disabled plugin
I have been playing with deployJava.js for the first time today. I'm pretty happy with it. It's been needed for a long time.
I do have one feature request though... It would be nice if I could detect if the plugin is installed but disabled. Firefox has an option to disable Java, but getJREs() still returns the JRE name. It would be nice to know, so I could display a message, a static image, etc.
I'm not even sure if Firefox exposes this, or if the same problem exists in other browsers. I just thought I'd ask.