This has only been tested on a vanilla Debian Sid. It was proven to work on 1 Ubuntu machine.
You’ll need a 32-bit Firefox, 32-bit JVM and dependencies. This guide will be command line only so that you can copy/paste. On a Debian remember that you don’t have sudo by default; you can either install and configure sudo or make sure you run commands as root.
If you have Skype running there’s a good chance you have everything and just need to jump the JVM part (as Skype is 32-bit only).