I'm trying to develop a Selenium based headless browser testing tool. PhantomJS isn't quite rendering elements properly, and we cannot install software on our test machines. It has to be, just unzipping a folder and running a script (in Windows), that has Selenium driving SlimerJS and Firefox. I've tried looking at "portableapps.com" but they seem to require an installation process. Do Mozilla publish the kind of build I'm after or is there a way I can do this myself? Thanks,