Custom login page in java open single sign on (JOSSO)

For single sign on I am using JOSSO (http://www.josso.org) for integrating two applications using IDP (using DB), the login page of both the applications are some,but my requirement is that, I want to segregate the login page for both the applications, how can I achieve this. Both the application is hosted in different servers.

lets assume one application default login is localhost:8080 and another one is localhost:80

So if I hit url localhost:8080 , it will show a login page of app1 and if I hit url localhost:80 it will show a login page of app2

Can I achieve this using a hidden variable passed and handle the same on myLoginForm.jsp as described in below URL-

http://ift.tt/1EYcz0e

However, I want to know if this is feasible or not and what is the best practice for implementing this requirement.

thanks.