non-US is a folder with files needed for the Virtual Cyrillic Keyboard
to have an option
"If physical keyboard on your computer is not in the 'English, USA'
for example, one could face "FR" mode while in an Internet-cafe in some French provincial town...
Detailed description of this option is here:
Please look how it works on http://Kbd.WinRus.com
and then decide if you want such option to be present.
If so then just Copy all the files from this folder non-US
to its 'parent' folder where you have all other files (.js, .png) from my .zip.
Paul Gorodyansky
"Cyrillic (Russian): instructions for Windows and Internet":
http://WinRus.com