php 分页、全选、反选、全不选、批量删除

<?php
/**
* 用户管理
* 2011/8/22
* kcj
*
* */
include "isLogin.php";
include "../conn/conn.php";
$sql="select * from user";
$rst=mysql_query($sql);
$totalnum=mysql_num_rows($rst);
$pagesize=5;
$page=$_GET['page'];
if($page==''){
    $page=1;
}
$begin=($page-1)*$pagesize;
$pagecount=ceil($totalnum/$pagesize);
?>

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
        <title>无标题文档</title>
        <meta name="Author" content="kcj" />
        <meta name="Keywords" content="php,kcj" />
        <link rel="stylesheet" type="text/css" href="style/lampcms.css">
        <script src="javascript/common0.js"></script>
        <script type="text/javascript">
          var checkall=document.getElementsByName("dell[]");
            function select(){                          //全选
                for(var $i=0;$i<checkall.length;$i++){
                    checkall[$i].checked=true;
                }
            }
            function fanselect(){                        //反选
                for(var $i=0;$i<checkall.length;$i++){
                    if(checkall[$i].checked){
                        checkall[$i].checked=false;
                    }else{
                        checkall[$i].checked=true;
                    }
                }
            }
            function noselect(){                          //全不选
                for(var $i=0;$i<checkall.length;$i++){
                    checkall[$i].checked=false;
                }
            }

        </script>


    </head>
    <body>
        <div id="main">
            后台管理->管理用户
            <form method="post" action="" onsubmit="return confirm('你确定要删除选中项吗?')" >
            <div class="msg-box">
                <ul class="viewmess">
                    <li class="dark-row">
                        <span class="list_width width_font">用户名</span>
                        <span class="list_width width_font" style="width:200px">备注名</span>
                        <span class="list_width width_font">注册时间</span>
                        <span class="list_width width_font">操作</span>
                    </li>
                         <?php

                         if(isset($_POST['dell'])){       //批量删除
                            $ids=$_POST['dell'];
                            $ids=implode(",", $ids);   //implode函数把数组元素组合为一个字符串。
             &n

补充：Web开发 , php ,