I did say I may have missed the nested gallery trick.
The Javascript switch is something I missed, but I will look into that.
*** EDIT ***
Having looked at the javascript switch, I have indeed managed something that suffices needs for now. May not look "professional", but it does serve the needs. I have a test page up and so far,, it is working out well under testing.
*** EDIT ***
As for showcase, I looked at that, but I am not certain it will suit the intended purpose of integration into the existing website, using the exact style of the website, nor am I inclined to purchase one copy for each website I run (at least 6 which all need galleries), which is why I purchased the JB-Pro Unlimited license.
If an unlimited website version of showkase were offered, I **might** consider it. until then, I will stay with JB pro.
As an aside and as much as I appreciate the advice to look at it, I do not need a sales pitch for showkase, which, to me, the better part of your post is. A simple explanation and a link would have sufficed. Don't want to sound harsh an apologies if I do, but as I say, advising to look at something is different to a sales pitch.