控制器代码：
class Admin extents Control
{
function index() {
$this->load->view('admin/index');
}
function top() {
$this->load->view('admin/top');
}
function menu() {
$this->load->view('admin/menu');
}
function main() {
$this->load->view('admin/main');
}
function bottom() {
$this->load->view('admin/bottom');
}
}
views文件夹下有个专门的admin文件夹，里面都是管理页面（index.php , top.php , menu.php , main.php , bottom.php）
index.php内容如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Administrator’s control panel</title>
</head>
<frameset rows="60,*,27" frameborder="no" border="0" framespacing="0">
<frame src="<?php echo site_url("admin/top") ?>" name="topFrame" scrolling="no">
<frameset rows="*" cols="0,*" name="ecc" framespacing="0" frameborder="no" border="0">
<frame src="<?php echo site_url("admin/menu") ?>" name="mainFrame" border="0" scrolling="no">
<frame src="<?php echo site_url("admin/main") ?>" name="rightFrame" scrolling="auto">
</frameset>
<frame src="<?php echo site_url("admin/bottom") ?>" name="bottomFrame" scrolling="no">
</frameset>
<noframes><body>
</body>
</noframes></html>