帮忙看一下PHP的JS的弹出提示框

     public function forgetpassword()

	{

	   $args=$this->ev->get('args');

	   $username=trim($args['username']);

	    if($username)

	    {	        

	        $user = $this->user->getUserByUserName($username);

	        $mail=$args['useremail'];	        

	        if($mail==$user['useremail'])

	        {

	            $str=md5($username."+".$user['userpassword']);

	            $link=base64_encode($username.".".$str);

	            $this->postmail($mail,'重设密码',"<p>点击链接重设密码</p><p>http://127.0.0.1/kaoshi/index.php?user-app-resetpassword&p=".$link."</p>")	;      

	            $message = array(

				'statusCode' => 200,

				"message" => "操作成功",

			    "callbackType" => 'forward',

			    "forwardUrl" => "index.php?".$this->G->defaultApp

			      );

			     exit(json_encode($message));

		     }		     		

			else

			{

				$message = array(

				'statusCode' => 300,

				"message" => "信息错误");

				exit(json_encode($message));

			}              

	    }

		$this->tpl->display('forgetpassword');

	}