@SteveJessop, make sure you offer a backlink to "Javascript hacks that make it possible for a very unrelated internet site to check no matter whether a specified URL is in your background or not" You can not always depend on privateness of the complete URL either. For example, as is https://andyojape.elbloglibre.com/37557680/not-known-facts-about-https-www-andersoncarlconsultancy-uk-copyright