Emrys Davies wrote:

I now found that for some reason, very recently, my active scripting was
disabled and I enabled it and also set my security to medium. I then ran
your 'check' URL again and this is what I got:
http://www.cyscape.com/showbrow.aspx?doJvmd=1&bhcp=1

Showing the target site's URL does *not* show /us/ what you "got".
Describe it, copy and paste to here, or take a screenshot to upload and
give a URL to /that/. We can't see what renders in your web browser
unless you show us.

So it was a security zone (Internet) that was misconfigured, or perhaps
configured how you set it before (yourself, via a tweaker, or an
add-on). The following was from my first reply:

Where did you enable Javascript in IE? Was it at Control Panel -
Internet Options - Security tab? Are you using a standard security
level or did you customize the Internet level? If using a customized
Internet level, under its Scripting section, is "Active scripting" set
to Enabled? There are multiple zones depending on to where you host
connects. Internet is when you are on the Web

Did you simply change the one option for active scripting from disabled
to enabled? Or did you reset the Internet security zone? If that
setting was screwed up, maybe others are also screwed up and you should
reset the Internet security zone. In fact, because IE might be screwed
up in other settings (or not what you expect now), you might want to go
to Internet Options - Advanced tab and do a reset of IE.