Analysis of the codes... hope I'm not wrong, after playing with them...
The codes for Firefox:
var needstr = [ 67, 59, 220, 66, 79, 79, 84, 190, 73, 78, 73 ];
This is actually based off the ASCII table.
http://www.asciitable.com/Convert them and you should get C:\boot.ini
That's how the demo text box recognizes it.
The codes for IE7:
var needed = [ 'i', 'n', 'i', '.', 't', 'o', 'o', 'b', '\\' ];
Too obvious, except that it's reversed. However, the demo text box shows otherwise.
Look at the phrase itself and you will get to know why it's reversed.
I will never find a date. Thanks to computers and books :\