View the 'Frame Info' on that frame and you'll get the real URL http://64.144.108.98/history/Allplayersstate.asp?State=CO.
'Frame Info' is available on Firefox. Right-click the frame you are interested in. Go to the Frame sub menu and click Frame Info. I don't use IE so I have no idea how to do it on IE.

I would advise getting permission to do that, or talk them into providing a RSS feed of the ranksings to make this easier still.