[DEPRECATED] It seems the affected vendor eventually changed the method of authentication, so this isn't relevant any more. However, still a great example on how some vendors implement "authentication". Don't try this at home. Big no-no.
This Firefox addon provided a Java-free authentication method for ContractBeheerder.
This repository contains all JPM compatible source files for this Firefox addon.
You can find the Firefox ready .xpi files in the dist folder.
Included icon is part of the Hawcons set by Yannick Lung (www.hawcons.com)