how to change url after submit form?

[eluser]liren[/eluser]
Hello friends:

I have a submit form in a page,when user submit form data,the url change to http://localhost/usermanage/usersubmit
Now,I want to change the url to http://localhost/usermange/otherURL(for example:http://localhost/home/index). how to do it? How to change the controller code to do this?Thanks!