Information about Java plugins (in Firefox)

Question

I need the following information about my Java plugins in Firefox (see picture):

plugin 'Java (TM)':

• Is the plugins 'Java (TM)' installed?
• Which version of this plugin is installed?
• What is the status of this plugin: "Immer aktivieren", "Nachfragen, ob aktiviert werden soll", "Nie aktivieren", ...?

plugin 'Java Deployment Toolkit':

• Is the plugins 'Java Deployment Toolkit' installed?
• Which version of this plugin is installed?
• What is the status of this plugin: "Immer aktivieren", "Nachfragen, ob aktiviert werden soll", "Nie aktivieren", ...?

How can I get this information with JavaScript?

Thank's for yor hints, Thomas

enter image description here

• Reinard: I don't think you'll be able to ask the browser if it's installed. You could look at the following though stackoverflow.com/questions/5746663/…
• Ziki: Maybe this will help you: detect-version-of-java-using-javascript