print the library

[eluser]my9006ci[/eluser]
hi,

I want to make my own library menu
Menubar.php

Code:

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Menubar {

  var $CI = null;
  function menubars()
  {
      $this->CI =& get_instance();
      $this->CI->load->model("menu");
      $menu = $this->CI->menu->get_menu(1);      
      if ($menu->num_rows() > 0)
      {
        $menubar = '<div id="menu">';
        $menubar .= '<ul class="menu">';
        foreach ($menu->result() as $row)
        {
            $submenu = $this->CI->menu->get_submenu($row->id);
            $menubar .= '<li><a >url.'" class="parent"><span>'.$row->menu.'</span></a>';
            if ($submenu->num_rows() > 0)
            {
                $menubar .= '<ul>';
                foreach ($submenu->result() as $subrow)
                {
                    $menubar .= '<li><a >url.'"><span>'.$subrow->menu.'</span></a>';
                }
                $menubar .= '</ul>';
            }
            else
            {
                $menubar .= '</li>';
            }
        }
        $menubar .= '</ul>';
        $menubar .= '</div>';
      }
     return $menubar;
}
}

?&gt;

then I want to put it on my controller

Code:

<?php

class Welcome extends Controller {

    function Welcome()
    {
        parent::Controller();
        $this->config->load('configsite');
        //$this->load->library('menubar');
    }
    
    function index()
    {
        $data['theme'] = $this->themes('theme');
        $data['menubar'] = $this->themes('menubar');
        $this->load->view('head',$data);
        $this->load->view('leftbar',$data);
        $this->load->view('body',$data);
        $this->load->view('rightbar',$data);
        $this->load->view('foot');
    }
    
    function themes($tema)
    {
        switch($tema)
        {
            case 'theme':
                $tema = './themes/'.$this->config->item('theme');
                if (!file_exists($tema))
                {
                    show_404();
                    exit;
                }
                else
                {
                    return $tema.'/';
                }
                break;
            case 'menubar':
                $tema = './menuthemes/'.$this->config->item('menutheme');
                if (!file_exists($tema))
                {
                    show_404();
                    exit;
                }
                else
                {
                    return $tema;
                }
                //$data['menu'] = $this->menubar->menubars();
                //return $data['menu'];
                break;
        }
    }
    
}

I previously checked whether the theme folder which is used in the library exists or not

Code:

case 'menubar':
                $tema = './menuthemes/'.$this->config->item('menutheme');
                if (!file_exists($tema))
                {
                    show_404();
                    exit;
                }
                else
                {
                    return $tema;
                }
                //$data['menu'] = $this->menubar->menubars();
                //return $data['menu'];
                break;

if there is a library that I show
if no error appears
how to call the library's

Please help me...