Thank you all for your help and suggestions, particularly Inger and Eric. As Wayan noted, this is mostly over the edge of my limited expertise.
It sort of works. I moved everything (Jpegs, cmap, js, everything) into the same folder in the "normal" win-10 structure (C:/users/dan/Documents/CoffeeCupSoftware/SiteDesigner), because I have no idea what the company has going on in the background.
I redid the cmap, using the 600px width jpg and it is non responsive. I don't know the format for internal urls (other pages) in the html, externals (NYTimes.com) work fine.
At this point, I am looking at a time-hole of indeterminate size and I don't want to be a pest about something that I will probably never understand. If somebody can kludge something workable together for me in LESS THAN 10 minutes of your time, I would appreciate it. Otherwise, I will hide this under one rock while I look at the others and, maybe, get back to it in the future.
URL:
http://pppotscom.coffeecup.com/index.html