@SteveJessop, be sure to give a url to "Javascript hacks that enable a completely unrelated web site to check no matter whether a provided URL is in the background or not" You'll be able to not always depend on privacy of the entire URL possibly. By way of example, as https://edwinnooeb.weblogco.com/37632918/helping-the-others-realize-the-advantages-of-uk-copyright-application-service