How can implement implicitly login?

[Jeff]

Hi All

I prefer to login without CAS interface. I mean may I input username and 
password in my uPortal home page, and process by CAS without display the 
login page of CAS? uPortal integrate yale cas client, but it only redirect 
the login request to cas logon page simply, does not post the 
data(username/password). Is there any other client can match my requirement?

And I think yale client will create an user account for uportal dynamic with 
developer role, after it gets the receipt. may I pass by the account 
creating step and keep local authorization by configuration?

Thank you

Jeff