Dale, Let's just say your inference is wrong. There is no obscurity going on.
I do appreciate the help you are giving.
I finally had time to "hack" the situation and get the openserenescreen.js file created.
For the info of folks watching this thread - essentially all that script does is "http://www.serenescreen.com" (with the appropriate amount of fiddling to get the environment right).
This is clearly done in "user" context, after a correct password has been supplied.
Edgar - I didn't doubt your word - I was just curious.
But I will note that "where to put the .js file" is not necessarily a simple question.