<%= form_remote_tag :url => { :controller => "user", :action => "process_login" }, :update => "login_logout" %>

Username:

<%= text_field "user", "username", :size => 10 %>

Password:

<%= password_field "user", "password", :size => 10 %>

<%= submit_tag "Login" %> <%= end_form_tag %> <%= link_to_remote "Create Account", :url => {:controller => "user", :action => "new_user"}, :update => "login_logout" %>