Just in case you have a look yourself, I should add that my testing site is now showing something completely different than it was yesterday.
Also, thanks for the great tip about Firebug.
Wow! That was fast. Thank you WPyogi.
I’m still finding my way around with coding, but I took a punt and pasted both those codes straight into my child theme and they worked a treat.
Fabulous. Thank you very much.