Sorry to trouble you with adverts but I do need to make back the running costs of the site and the Donate button, above, clearly isn't being used by site visitors. So I thought I'd try some ads. A donation would be preferable but, if you don't want to do that and still want to help, just click on a few adverts every time you visit this site and I'll eventually get a couple of pennies from Google. Thanks. Allan Jackson.