在ScriptManager中使用lightbox，第一页可正常显示，第二页以后就无法显示


<asp:ScriptManager ID="ScriptManager1" runat="server">
        <Scripts>
            <asp:ScriptReference Path="~/js/prototype.js" />
            <asp:ScriptReference Path="~/js/scriptaculous.js?load=effects" />
            <asp:ScriptReference Path="~/js/lightbox.js" />
        </Scripts>
    </asp:ScriptManager><asp:UpdatePanel ID="UpdatePanel1" runat="server">
                        <ContentTemplate>
                        <div class="picture">
                            <asp:Repeater ID="repeater_Picture" runat="server">
                                <ItemTemplate>
                                    <div class="box">
                                        <a href='<%#Eval("FileUrl") %>' rel="lightbox[plants]" title='<%#Eval("Title").ToString()+"："+Eval("ContentByText").ToString() %>'>
                                            <div class="content">
                                                <div class="image">
                                                    <img src='<%#Eval("ThumbUrl") %>' alt='<%#Eval("Title") %>' /></div>
                                                <div class="title">
                                                    <%#Eval("Title") %></div>
                                            </div>
                                        </a>
                                    </div>
                                </ItemTemplate>
                            </asp:Repeater>
                      </div>
                            <webdiyer:AspNetPager ID="AspNetPager1" runat="server" CustomInfoHTML="%CurrentPageIndex%/%PageCount%"
                                FirstPageText="首页" LastPageText="尾页" NextPageText="下一页" OnPageChanged="AspNetPager1_PageChanged"
                                PrevPageText="上一页" ShowPageIndexBox="Always" Width="100%" HorizontalAlign="Right"
                                PageIndexBoxType="DropDownList">
                            </webdiyer:AspNetPager>
                        </ContentTemplate>
                    </asp:UpdatePanel>
在第一页时，可以弹出lightbox，但翻至第二页、第三页、......，均无法显示lightbox。如果不用UpdatePanel也可正常显示。我实在是不知道是什么原因，请教各位了！