用js 获取gridview中input的value

<asp:GridView ID="GVData" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False"
                    BorderStyle="Groove" BorderWidth="1px" OnRowDataBound="GVData_RowDataBound" PageSize="15"
                    Width="100%">
                    <PagerSettings Mode="NumericFirstLast" Visible="False" />
                    <PagerStyle BackColor="LightSteelBlue" HorizontalAlign="Right" />
                    <HeaderStyle BackColor="#DEDEDE" Font-Size="12px" ForeColor="Black" Height="20px" /><AlternatingRowStyle BackColor="WhiteSmoke" />
                    <Columns>
                        <asp:TemplateField>
                            <ItemTemplate>
                             <asp:CheckBox ID="CheckSelect" runat="server"  />
                               <span style=" display:none;">
                               <input type="text" id="hid" name="CheckSelect" runat="server" value='<%#DataBinder.Eval(Container.DataItem, "Me_Sn")%>' />
                               </span>
                                <asp:Label ID="LabVisible" runat="server" Text='<%#DataBinder.Eval(Container.DataItem, "Me_Sn")%>' 
 
                                    Visible="False"></asp:Label>
                            </ItemTemplate>
                            <HeaderStyle Width="20px" />
                            <HeaderTemplate>
                                <input id="CheckBoxAll" onclick="CheckAll()"  type="checkbox" />
                            </HeaderTemplate>
                        </asp:TemplateField>

代码如上 ，我要用 JS 或者JQ 获取 <input type="text" id="hid" 绑定的数据，
页面生成以后ID 变成动态的了
请大神赐教，我实在是山穷水尽了！！ 谢谢
var ID;
var Modifynumber = 0;
for (var i = 0; i < window.document.form1.elements.length; i++) {
var e = form1.elements[i];

if (e.type='checkbox' && e.id != "CheckBoxAll") {
if (e.checked == true) {
Modifynumber++;
if (Modifynumber > 1) {
alert("只允许选择一项！");
return false;
}
var inputs = e.parentNode.getElementsByTagName("input");
if(inputs.length == 2 && inputs[1].id.substr(inputs[1].id.length - 3) == "hid")
ID = inputs[1].value;
}
}
}
if (Modifynumber == 0) {
alert("请至少选择一项！");
return false;
}

alert(ID)
$('#w1').window({
width: 600,
height: 400,
modal: true,
href: "HRKQsystem_Modify.aspx?id=" + ID + "",

title: "hehe"
});

没有html，不好测试，你先试一下吧