[CentOS] Speedtest.mini on a local website?

Stephen Harris wrote:

> It will tell you the upload/download speeds between the web client
> and your web server.  If your client and webserver are on the same LAN
> then you're testing your LAN speed.  If your client and webserver are
> separated by the internet then you're testing the speed of the internet
> links.

That's really what I meant.
In any case, speedtest.mini does not work for me either way.
It just shows a blank black (or dark-blue) page.
This is running on two CentOS-6.3 servers (one remote),
and looking from a Firefox browser on a Fedora-17 laptop.

-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College Dublin