serverFrame.setServerURL()
s.setServerURL("myserver.mydomain.com/cgi-bin/mapserv")
Sets the address of the server to submit requests to. All variables
in the serverFrame will be sent as POSTed CGI variables when the
serverFrame is submitted.
At the moment the server addresses has to be the same as where
the MapClient application comes from; it can come from
servers with the same domain suffix if the "domain" variable has been set
(see Reference Guide, globals/domain). This security issue is covered
in the User's Guide 5.4.