gridview对齐方式。。。

<table width=100% >
        <tr>
            <td valign="top" align="center"><asp:Panel ID="Panel1" runat="server" >
                <asp:Label ID="Label2" runat="server" Text="推荐内容 Featured Dialogue"></asp:Label></asp:Panel>
                <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" Width=100% ShowHeader="False" BorderColor="Black" style="font-size: small; vertical-align: text-top;" BorderStyle="Groove" >
        <Columns>
            <asp:TemplateField>
                <ItemTemplate>                                                          
                    <asp:HyperLink ID="HyperLink1" runat="server" ImageUrl='<%# Eval("jjtp") %>' NavigateUrl='<%# DataBinder.Eval(Container,"DataItem.lessonid","newDialogue.aspx?lid={0}") %>' ></asp:HyperLink>
                </ItemTemplate>
                <ItemStyle Width="20px" />
            </asp:TemplateField>
            <asp:TemplateField>
                <ItemTemplate>
                    <table style="width: 100%;">
                        <tr valign="top">
                            <td style="text-align: left; background-color: #33cc66;" colspan="4">
                                题目:<asp:Label ID="Label3" runat="server" Text='<%# Eval("Dtitle") %>'></asp:Label>
                                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
                                &nbsp;&nbsp; 难度&nbsp; :&nbsp;
                                <asp:HyperLink
                                    ID="HyperLink2" runat="server" ImageUrl='<%# Eval("Dnandu") %>'></asp:HyperLink>
                                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
                                &nbsp; &nbsp;&nbsp; &nbsp;&nbsp; 主题:<asp:Label ID="Label4"
                                        runat="server" Text='<%# Eval("[name]") %>'></asp:Label>
                                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
                                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;编号:<asp:Label ID="Label5" runat="server" Text='<%# Eval("Dbianhao") %>'></asp:Label></td>
                        </tr></table>表格里面有个gridview但是模板列0和模板列2里面顶端不对齐  valign也没用 应该怎么改啊？