About Popup Window in ASP.Net

I have a gridview which contains a details button as the last column.

My aspx:

<asp:GridView Width="100%" ID="gv_NotApplied" CssClass="datatable" AllowSorting="True"
    runat="server" TabIndex="2" AutoGenerateColumns="False" AllowPaging="True" GridLines="None">
    <Columns>
        <asp:TemplateField HeaderText="serial">
            <ItemTemplate>
                <asp:Label ID="lblSerial" runat="server"></asp:Label>

            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField HeaderText="name" DataField="crs_name" />
        <asp:BoundField HeaderText="lecturer" DataField="name" />
        <asp:TemplateField HeaderText="details">
            <ItemTemplate>
                <asp:ImageButton ID="Ibtn_Details" runat="server" ImageUrl="~/Images/detail.png"
                    CommandArgument='<%#((GridViewRow)Container).RowIndex%>' CommandName="Detail"
                    CausesValidation="false" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
    <RowStyle VerticalAlign="Top" CssClass="row" />
</asp:GridView>

What I would like to do is:

• When the user clicks the details button, open a pop up window (dialog window).

• In this window I would like to put some asp.net server controls in (like grid views). So I want this window to enable/allow me to access those controls in the code behind.