Display CAS server on OWA page

Hello,

I would like to display the CAS server that a user is connected to when they go to the VIP of our load balancer.  I know that you can view the CAS server after they log on and go to help.  Is there a way, or what is the code that they use to grab the CAS server.  We can probably add it to the HTML code of the configuration and view it on the initial OWA log on page.