I understand now, you are right! I opened up your link in Chrome by default, then clicked on the "try it yourself", and it did not work. But when I did it in ie9 it worked... Thanks for pointing that out.
When I copied their html code, and xml data file into a sub-directory, I still could not get their example to work on my machine using ie9...
I'll post that in their forums and see what they suggest.
Thanks again for your input.