My test works in Firefox, and it worked in IE the other day, but out of the blue I'm getting:

"To protect your security,Internet Explorer has restricted this webpage from running scripts or ActiveX controls that could access your computer.Click here for options..."

Strangely, the various test links I'm finding in this forum seem to be working fine.  I'm not using any other JS at this point . 

Could this just be due to my running it locally (file://) rather than via a web server?  If anything, I'd think local files had more permissions, though.

Hello, 
yes it is because you are running it from file:// you need to run it with a web server, via http://localhost/

Thank you kindly