Connecting to oracle webserver

Dear Oracle Gurus,

I am new to this Oracle IAS. I am trying to connect to Oracle IAS to login to the application (by directly passing the userid/password information in the url).

In previous version(9i), we used to connect to the webserver using the below link (to login automatically without manually entering the id and pass). Look at the parameters.

--http://test.com:8888/OA_HTML/OA.jsp?OAFunc=OAHOMEPAGE?i_1=usertest&i_2=password&rmode=2&home_url=http://test.com:8888/OA_HTML/AppsLocalLogin.jsp

If I use the same method to connect to the 10g webserver, I get the below error message

"Could not find function: OAHOMEPAGE?!_1=usertest"

Does anyone know how to pass user id and password in the URL?

TIA