Random imagery

Deleting valves finally broke the random image display that appears down the left of the home page. That was a rather old script I wrote that had 32 images pre-defined and selected a sequence of 5. So I’ve re-written the script. It now dips into the valve database and generates 5 random images from any of the valves. Pity some thumbnails are rather fat!

No prizes for getting 5 valves all the same… it should always generate 5 but there are one or two bogus lines in the database still so you may get less, and I’ve left it to chance whether you end up with more than one the same!

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