js或许jquery判断DataGrid模板列中lable的text 是否为空

js或者jquery判断DataGrid模板列中lable的text 是否为空
VS 2003 不方便调前台代码 想实现这个判断，但是 又不会JS ，来个JS 的帮个忙

HTML code

<TABLE border=0 cellSpacing=0 cellPadding=0 width=650>  <TR border="1">    <TD style="FONT-SIZE: 16px">上传员工资料 </TD>    <TD><A href="../archive_info/archive_add.aspx?type='append'">添加</A> </TD></TR>  <TR>    <TD colSpan=2>      <TABLE id=tableNecessary border=0 width="99.5%">        <TR>          <TD style="COLOR: #333333; FONT-SIZE: 14px" bgColor=#9db8e8             colSpan=3>员工资料上传--必要资料 </TD></TR>        <TR>          <TD width="99.5%">    <table cellspacing="0" rules="all" border="1" id="DataGridNecessary" width="100%">        <tr>            <td>资料名称</td><td>文件名称</td><td>操作列</td>        </tr><tr>            <td>户口本复印件</td><td>                                                                                                                <span id="DataGridNecessary__ctl2_Lbl_Nece">Blue hills.jpg</span>                                                    </td><td>                                                                                                                <input type="submit" name="DataGridNecessary:_ctl2:linkUpNece" value="重新上传" id="DataGridNecessary__ctl2_linkUpNece" />                                                    </td>        </tr><tr>            <td>毕业证书</td><td>                                                                                                                <span id="DataGridNecessary__ctl3_Lbl_Nece">Blue hills.jpg</span>                                                    </td><td>                                                                                                                <input type="submit" name="DataGridNecessary:_ctl3:linkUpNece" value="重新上传" id="DataGridNecessary__ctl3_linkUpNece" />                                                    </td>        </tr>    </table></TD></TR></TABLE></TD></TR>  <TR>    <TD colSpan=2>      <TABLE id=tableNon width="99.5%">        <TR>          <TD style="COLOR: #333333; FONT-SIZE: 14px" bgColor=#9db8e8             colSpan=3>员工资料上传--非必要资料</TD></TR>        <TR>          <TD><table cellspacing="0" rules="all" border="1" id="DatagridNon" width="100%">        <tr>            <td>资料名称</td><td>文件名称</td><td>操作列</td>        </tr><tr>            <td>身份证复印件</td><td>                                                                                                                <span id="DatagridNon__ctl2_Lbl_Non">Winter.jpg</span>                                                        <asp:HyperLink ID="href1" NavigateUrl=""></asp:HyperLink>                                                    </td><td>                                                                                                                <input type="submit" name="DatagridNon:_ctl2:LinkUpNon" value="重新上传" id="DatagridNon__ctl2_LinkUpNon" />                                                    </td>        </tr>    </table></TD></TR></TABLE></TD></TR>  <TR>    <TD colSpan=2>      <TABLE id=tablebtn width="99.5%">        <TR>          <TD width="20%" align=center><input type="submit" name="btn_Confirm" value="提交资料" id="btn_Confirm" /></TD></TR></TABLE></TD></TR></TABLE>            </td></tr></table> 
 

JScript code

            var gsdGridView = document.getElementById(GridViewID)            for (i = 1; i < gsdGridView.rows.length; i++) {                var inputArray = gsdGridView.rows[i].getElementsByTagName('span');                for (var j = 0; j < inputArray.length; j++) {                            //---                                   }            }