Javascript won't load - Firefox

[Leon@rd]

Javascript won't load on this one website. When I click certain buttons, nothing happens. Everything was working fine yesterday. I haven't changed anything since then. I've tried everything. I restarted Firefox in Safe Mode, etc. Nothing works. The site works fine with other browsers, just not Firefox. I appear to be the only one with this problem according to other site users. What more could I do to fix it?

 

[Hawkeye22]

In the URL bar, type in about: plugins and hit enter. Make sure java is installed as a plugin for the browser. otherwise, shut down the browser, uninstall java and install the newest version of java.

NOTE: The about: plugins should have no spaces in it. I only did it so it won't show up as a smiley in the forum post, like this .