appear subdomain instead of ip address

Question

hi!

I have me own xamp server on my office and I developed an intranet witch clients can access through client.com domain... I have an index.php with header("location:ipadress") .

i was wondering if it is possible to redirect cliente to my office ip adress but mantain my domain name in the browser like http://intranet.client.com

is that possible? I think maybe making a 0 border frame.. but.. there´s no other way to do that?

thank yo in advance! thank yo in advance!