CI框架，表达提交没有反应，这是为什么呢

<form class="login active" action="http://localhost/~chrisfu/CI/index.php/login/checklogin" method="post">						<h3>Login</h3>						<div>							<label>Username:</label>							<input type="text" name="name"/>							<span class="error">This is an error</span>						</div>						<div>							<label>Password: <a href="forgot_password.php" rel="forgot_password" class="forgot linkform">Forgot your password?</a></label>							<input type="password" name="psword"/>							<span class="error">This is an error</span>						</div>						<div class="bottom" >							<div class="remember"><input type="checkbox" /><span>Keep me logged in</span></div>							<input type="submit" value="Login" name="submit"></input>							<a href="register.php" rel="register" class="linkform">You don't have an account yet? Register here</a>							<div class="clear"></div>						</div>					</form>

<?phpclass Login extends CI_Controller{	function index(){		$this->load->view('index');	}	function checklogin(){		$this->load->model('test_m');		$user=$this->test_m->user_select($_POST['name']);				if($user){			if($user[0]->upass==$_POST['pword']){				echo "password right";				$this->load->library('session');				$arr=array('uid'=>$user[0]->uid);				$this->session->set_userdata($arr);				echo "<br>";				echo $this->session->userdata('uid');			}else{					echo "password wrong";			}		}else{			echo "user not exist";		}	}}	?>