I uninstalled Firefox over this issue, being tired of its constant interface changes. I don't want changes. I want a reliable tool. So I issued some command in the upper bar--whatever it's called now, I'm merely a humble statistician--and now I can't find a way to undo this. I reinstalled Firefox (this time telling it no updates) but javascript is still off. This is just a mess. If anyone could help, I'd appreciate it.