Authentication, private pages direct urls

Ha I’m a dummy, that works perfectly. Is there a way to get it to redirect to the page the user was attempting to view after they successfully login? Right now in login.php, I have logins redirecting to a single page (‘client’), rather than the redirect being contextually aware…

if($user = $site->user(get('username')) and $user->login(get('password'))) {
  // redirect to the homepage 
  // if the login was successful
  go('client');
} else {
  // make sure the alert is being 
  // displayed in the template
  $error = true;
}

EDIT:

I found this same question asked here:

http://forum.getkirby.com/t/redirecting-user-after-logging-in/492/3