bob_nestor wrote:
... I see someone spent a lot of time updating web sites to point out that they're closed, even taking down useful information like maps. ...
None of the web sites were changed and nothing was taken down, you just can't see them. In simple terms they use a simple redirect to send you to a page saying "we are closed". The redirect is just a simple line or 2 of text in a file you can not see but the server(s) read that file every time someone tries to get to any page on the server. It probably took the IT person 10 minutes to implement it.
For the geeks: mod rewrite in the htaccess file.