<div id="loader"></div> 
<div id="module_list"> 
  <input type="hidden" id="orderlist" /> 
  <div class="modules" title="1"> 
   <h3 class="m_title">Module:1</h3> 
   <p>1</p> 
  </div> 
  ... 
</div> 

#module_list{margin-left:4px} 
.modules{float:left; width:200px; height:140px; margin:10px; border:1px solid #acc6e9; 
 background:#e8f5fe} 
.m_title{height:24px; line-height:24px; background:#afc6e9} 
#loader{height:24px; text-align:center} 

$(function(){ 
  $(".m_title").bind('mouseover',function(){ 
    $(this).css("cursor","move") 
  }); 
   
  var $show = $("#loader"); 
  var $orderlist = $("#orderlist"); 
  var $list = $("#module_list"); 
   
  $list.sortable({ 
    opacity: 0.6, //设置拖动时候的透明度 
    revert: true, //缓冲效果 
    cursor: 'move', //拖动的时候鼠标样式 
    handle: '.m_title', //可以拖动的部位，模块的标题部分 
    update: function(){ 
       var new_order = []; 
       $list.children(".modules").each(function() { 
        new_order.push(this.title); 
       }); 
       var newid = new_order.join(','); 
       var oldid = $orderlist.val(); 
       $.ajax({ 
        type: "post", 
        url: "update.php", //服务端处理程序 
        data: { id: newid, order: oldid },  //id:新的排列对应的ID,order：原排列顺序 
        beforeSend: function() { 
           $show.html("<img src='load.gif' /> 正在更新"); 
        }, 
        success: function(msg) { 
           //alert(msg); 
           $show.html(""); 
        } 
       }); 
    } 
  }); 
}); 

var new_order = []; 
$list.children(".modules").each(function() { 
   new_order.push(this.title); 
}); 
var newid = new_order.join(','); 
var oldid = $orderlist.val(); 

include_once("connect.php");//连接数据库 
$order = $_POST['order']; 
$itemid = trim($_POST['id']); 
if (!emptyempty ($itemid)) { 
  if ($order != $itemid) { 
    $query = mysql_query("update sortlist set sort='$itemid' where id=1"); 
    if ($query) { 
      echo $itemid; 
    } else { 
      echo "none"; 
    } 
  } 
} 

<script type="text/javascript" src="js/jquery.js"></script> 
<script type="text/javascript" src="js/jquery-ui.min.js"></script> 

include_once("connect.php"); 
 
$query=mysql_query("select * from sortlist where id=1"); 
if($rs=mysql_fetch_array($query)){ 
  $sort=$rs['sort']; 
} 
$sort_arr=explode(",",$sort); 
$len=count($sort_arr); 

<div id="loader"></div> 
<div id="module_list"> 
 <input type="hidden" id="orderlist" value="<?php echo $sort;?>" /> 
 <?php 
   for($i=0;$i<$len;$i++){ 
 ?> 
 <div class="modules" title="<?php echo $sort_arr[$i]; ?>"> 
   <h3 class="m_title">Module:<?php echo $sort_arr[$i]; ?></h3> 
   <p><?php echo $sort_arr[$i]; ?></p> 
 </div> 
 <?php } ?> 
</div>