<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title></title>
<script src="http://code.jquery.com/jquery-1.8.3.min.js"></script>
<script>
$(function($){
//元素交换
$(".up").live('click',function(){
$(this).parent().parent().prev("tr").before($(this).parent().parent());
});
$(".down").live('click',function(){
$(this).parent().parent().next("tr").after($(this).parent().parent());
});
$(".delete").live('click',function(){
$(this).parent().parent().remove();
});
$(".add").live('click',function(){
var i= $("#tr_count").val();
$('<tr id="'+(i++)+'"><td>'+(i)+'</td><td><input type ="button" value="上" class="up"/><input type ="button" value="下" class="down"/><input type ="button" value="删" class="delete"/><input type ="button" value="加" class="add"/></td></tr>')
.insertAfter($(this).parent().parent());
$("#tr_count").val(i);
});
});
</script>
</head>
<body>
<input type="hidden" value="1" id="tr_count">
<table width="100" height="100" id="table" border="1">
<tr id="1">
<td>1</td><td>
<input class="up" type="button" value="上">
<input class="down" type="button" value="下">
<input class="delete" type="button" value="删">
<input class="add" type="button" value="加">
</td>
</tr>
</table>
</body>
</html>