行与行之间的分界线没有出现在想要的位置。

截图如下：关键代码如下：
<body onload="showtime(time);"> 
    <form id="form1" runat="server">
    
        <table border="1" cellpadding="-2" cellspacing="-2" style="width:100%; height:100% ">
         <tr>
            <td colspan="2" align="center" valign="top" height="20%">
               <img src="images/img01.jpg"/>
            </td>
         </tr>
         <tr>
            <td colspan="2" height="5%">
               <table width="100%" border="0" cellpadding="-2" cellspacing="-2">
                   <tr>
                      <td align="left"style="width:30%">
                         <div id="time"></div>
                      </td>
                      <td align="right"style="width:50%">
                         您现在的身份是普通游客！请注册成会员！
                      </td>
                      <td align="right" style="width:20%">
                          <asp:Button ID="Button2" runat="server" Text="注册" Width="41px" />
                          &nbsp;
                          <asp:Button ID="Button1" runat="server" Text="登录" Width="41px" />
                      </td>
                   </tr>
               </table>
            </td>
         </tr>
         <tr>
            <td align="right" style="width:20%" height="70%">
              <table border="0" cellpadding="-2" cellspacing="-2" style="height:100%">
                <tr>
                  <td height="35%">
                    <a href="Default.aspx">首页</a><p/>
                    <a href="SiteMasterHomePage.aspx">站长主页</a><p/>
                    <a href="AddFriends.aspx">加为好友</a><p/>
                    <a href="FriendsSpace.aspx">好友空间</a>
                  </td>
                </tr>
                <tr>
                  <td height="65%">
                    深蓝
                  </td>　　
                </tr>
              </table>
            </td>
            <td rowspan="2" style="width:80%" valign="top" height="70%">
              <table border="0" cellpadding="-2" cellspacing="-2">
                <tr>
                   <td width="800px" height="25px" style="background:url('images/link_bar.jpg');">
                       <asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server">       
                      </asp:ContentPlaceHolder>
                   </td>
                </tr>
              </table>
            </td>
         </tr>
         <tr>
            <td colspan="2" align="center" height="5%">
               &copy2007 myBookroom
            </td>
         </tr>
       </table>
     
    </form>
</body>
</html>本来我的初衷是让行与行之间的分界线出现在<tr>
                  <td height="35%">
                    <a href="Default.aspx">首页</a><p/>
                    <a href="SiteMasterHomePage.aspx">站长主页</a><p/>
                    <a href="AddFriends.aspx">加为好友</a><p/>
                    <a href="FriendsSpace.aspx">好友空间</a>
                  </td>
                </tr> 与 
                  <tr>
                  <td height="65%">
                    深蓝
                  </td>　　
                </tr>之间的。
没想到却出现在了<tr>
                  <td height="65%">
                    深蓝
                  </td>　　
                </tr>的下面，谁知道代码怎么改啊？