Thanks for for that tip i.e. finder>command-J "sort by none" did the trick.

Safari>prefs>Block pop-up windows is already checked.

Jon, I have found ClamXAV has notified me immediately of any malware etc but thanks for the suggestion.

jaybass

OS 13.6.6 iMac (Retina 5K, 27", 2017, 3.4 GHz Intel Core i5, 24 GB RAM, 2400 MHz DDR4. SuperDuper. 1 TB Lacie HD