在母版页中，发生Microsoft JScript 运行时错误: 'Ext.Net.DirectMethod' 为空或不是对象的错去

<script src="scripts/jquery-1.7.2.min.js" type="text/javascript"></script>   
<head runat="server">
    <title>柯哀永恒论坛欢迎您光临 http://www.conansherry.com</title>    
    <meta name="Author" content="灰原哀"/>
    <meta name="keywords" content=""/>
    <meta name="description" content="" />
    <link href="App_Themes/Theme1/css.css" rel="stylesheet" type="text/css" />    
    <!-----跑马灯效果JQuery代码--------------------------->   
    <script src="scripts/jquery-1.7.2.min.js" type="text/javascript"></script>
    <style type = "text/css">
     * { margin:0px; padding:0px;}
body { font:12px; padding:100px 200px;}
ul { list-style:none;}
img { padding:2px; border:1px solid #eee;}
a { outline:none;}

#imgs { width:500px; float:left; margin-bottom:10px;}
.top, .btm { background:url(image/sprite.gif) no-repeat; overflow:hidden;}
.top { background-position:0 0; height:5px;}
.btm { background-position:0 -5px; height:7px;}
.mid { width:486px; background:url(image/bg_img.gif) repeat-y; padding:5px 7px 0;}
.mid ul { width:486px; height:300px; background:#fff; position:relative; overflow:hidden;}
.mid ul li { width:486px; height:300px; position:absolute; left:490px; top:0;}
.mid ul li.first { left:0;}
#img_list { width:500px; height:320px; padding-top:5px; overflow:hidden; height:1%;}
#img_list a { display:block; width:14px; height:14px; text-indent:-1000px; float:left; margin-right:5px; background:url(image/sprite.gif) no-repeat 0 -13px;}
#img_list a:hover, #img_list a.active { background-position:-14px -13px;}
        
    </style>    <script type="text/javascript">
        var curr = 0, next = 0, count = 0;
        $(document).ready(function () {
            // 记录图片的数量
            count = $('#imgmy img_list a').size();
            t = setInterval('imgPlay()', 2000);
            // 鼠标移动到图片或导航上停止播放，移开后恢复播放
            $('#imgmy imgs li, #imgmy img_list a').hover(function () {
                clearInterval(t);
            }, function () {
                t = setInterval('imgPlay()', 2000);
            });            //点击导航播放到相应的图片
            $('#imgmy img_list a').click(function () {
                // index()函数返回当前导航的下标
                var index = $('#imgmy img_list a').index(this);
                if (curr != index) {
                    play(index);
                    curr = index;
                };
                return false;
            });
        });        // 播放图片的函数
        var imgPlay = function () {
            next = curr + 1;
            // 若当前图片播放到最后一张，设置下一张要播放的图片为第一张图片的下标
            if (curr == count - 1) next = 0;
            play(next);
            curr++;
            // 在当前图片的下标加1后，若值大于最后一张图片的下标，则设置下一轮其实播放的图片下标为第一张图片的下标，而next永远比curr大1
            if (curr > count - 1) { curr = 0; next = curr + 1; }
        };        // 控制播放效果的函数
        var play = function (next) {
            // 当前的图片滑到左边-500px，完成后返回到右边490px
            // 下一张图片滑到0px处，完成后导航的焦点切换到下一个点上
            $('#imgmy imgs li').eq(curr).css({ 'opacity': '0.5' }).animate({ 'left': '-500px', 'opacity': '1' }, 'slow', function () {
                $(this).css({ 'left': '490px' });
            }).end()
.eq(next).animate({ 'left': '0px', 'opacity': '1' }, 'slow', function () {
    $('#imgmy img_list a').siblings('a').removeClass('active').end().eq(next).addClass('active');
});
        };
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <atlas:ScriptManager EnablePartialRendering="true" ID="UserListMain" runat="server"></atlas:ScriptManager>
    <div id="imgmy">
        <table border="0" cellpadding="0" cellspacing="0" style="width: 855px">
            <tr>
                <td colspan="2">
                    <img alt="柯哀永恒" src="images/yyzyq2.jpg"/></td>
            </tr>
            <tr style="height:30px">
                <td align="center" style="background-color: #99CCCC; " colspan="2">
                    <a href="Default.aspx">首页</a>&nbsp;|&nbsp;<a href="SmallClassList.aspx?bigid=1">ASP.NET学习专区</a>&nbsp;|&nbsp;<a href="SmallClassList.aspx?bigid=2">娱乐专区</a>&nbsp;|&nbsp;<a href="SmallClassList.aspx?bigid=3">管理专区</a>&nbsp;|&nbsp;
                    <asp:HyperLink ID="hlkNewPost" runat="server" NavigateUrl="~/NewPost.aspx">最新帖子TOP100</asp:HyperLink>&nbsp;|&nbsp;<asp:HyperLink ID="hlkClassicPost" runat="server" NavigateUrl="~/ClassicPost.aspx">精华帖子</asp:HyperLink></td>                
            </tr>
            <tr style="height: 30px; background-color:lavender">
                <td style="width:70%">                    
                    <uc2:UserLoginStateControl id="UserLoginStateControl1" runat="server">
                    </uc2:UserLoginStateControl></td>
                <td style="width:30%" align="right">
                    <uc1:UserInBoxControl ID="UserInBoxControl1" runat="server" />
                </td>
            </tr>
            <tr>
                <td colspan="2">
                 <div id="imgs">
                   <div class="top"></div>
                   <div class="mid">
                   <ul>
                      <li class="first"><a href="#"><img src="image/conan1.jpg" alt="1" style ="height:300px; width:500px;" /></a></li>
                      <li><a href="#"><img src="image/conan2.jpg" alt="2" style ="height:300px; width:500px;" /></a></li>
                      <li><a href="#"><img src="image/conan3.jpg" alt="3" style ="height:300px; width:500px;" /></a></li>
                      <li><a href="#"><img src="image/conan4.jpg" alt="4" style ="height:300px; width:500px;" /></a></li>
                   </ul>
                   <div id="img_list">
                  <a href="#1" class="active">1</a>
                  <a href="#2">2</a>
                  <a href="#3">3</a>
                  <a href="#4">4</a>
               </div>
            </div>
        <div class="btm"></div>
    </div>JQuery中提示在母版页中，发生Microsoft JScript 运行时错误: 'Ext.Net.DirectMethod' 为空或不是对象的错去，
请教大家，帮忙解决一下，谢谢啦~~