why on clicking on edit button of childgridview the childgridview hides?

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C#3.0

C#

ASP.NET

jQuery

Gridview

this is what i have done for nested gridview : The jquery i have used to maintain this show hide is as:

<script type="text/javascript">
    // Method for managing opening of gridview on + image and - image


    $("[src*=plus]").live("click", function() {
        $(this).closest("tr").after("<tr><td></td><td colspan = '999'>" + $(this).next().html() + "</td></tr>")
        $(this).attr("src", "../Image/minus.gif");
    });

    $("[src*=minus]").live("click", function() {

        $(this).attr("src", "../Image/plus.gif");
        $(this).closest("tr").next().remove();

    });



</script>


  <asp:GridView ID="GridView1" runat="server" CellPadding="4" ForeColor="#333333" DataKeyNames="num"
                            AutoGenerateColumns="False" Style="font-size: x-small" OnSelectedIndexChanging="GridView1_SelectedIndexChanging"
                            OnRowCancelingEdit="GridView1_RowCancelling" OnRowUpdating="GridView1_RowUpdating" OnRowCommand="GridView1_RowCommand"
                            OnRowDeleting="GridView1_RowDeleting"  ShowFooter="True"
                            OnRowEditing="GridView1_RowEditing" OnRowDataBound="GridView1_RowDataBound" OnSorting="GridView1_Sorting"
                            AllowSorting="true">
                            <RowStyle BackColor="#E3EAEB" />
                            <Columns>
                                <asp:TemplateField>
                                    <ItemTemplate>
                                        <img alt="" style="cursor: pointer" src="../Image/plus.gif"  />
                                        <asp:Panel  ID="pnlOrders" style="display:none;">


                                            <asp:GridView ID="GridView3" runat="server" CellPadding="4" ForeColor="#333333" DataKeyNames="sno"
                                                OnRowCancelingEdit="GridView3_RowCancelling" OnRowUpdating="GridView3_RowUpdating"
                                                OnRowEditing="GridView3_RowEditing" AutoGenerateColumns="False" Style="font-size: x-small">
                                                <RowStyle BackColor="#E3EAEB" />
                                                <Columns>
                                                    <asp:BoundField DataField="Name" HeaderText="Name" />
                                                    <asp:TemplateField>
                                                    <HeaderTemplate>
                                                    Detailed Head
                                                    </HeaderTemplate>
                                                        <ItemTemplate>

                                                            <asp:Label ID="empdetails" Width="200px" runat="server" Text='<%# Eval("Details") %>'></asp:Label>
                                                             </ItemTemplate>
                                                      <EditItemTemplate>

                                                        <asp:TextBox ID="txtempdetail" Width="200px" runat="server" MaxLength="9" Text='<%# Eval("Details") %>'>
                                                            </asp:TextBox>
                                                      </EditItemTemplate>
                                                    </asp:TemplateField>
                                                    <asp:BoundField DataField="sal" HeaderText="salary" />
                                                    <asp:CommandField ShowEditButton="true" EditText="Edit"  />
                                                </Columns>
                                                <FooterStyle BackColor="#1C5E55" Font-Bold="True" ForeColor="White" />
                                                <PagerStyle BackColor="#666666" ForeColor="White" HorizontalAlign="Center" />
                                                <SelectedRowStyle BackColor="#C5BBAF" Font-Bold="True" ForeColor="#333333" />
                                                <HeaderStyle BackColor="#1C5E55" Font-Bold="True" ForeColor="White" />
                                                <EditRowStyle BackColor="#7C6F57" />
                                                <AlternatingRowStyle BackColor="White" />
                                            </asp:GridView>

                                        </asp:Panel>
                                    </ItemTemplate>
                                </asp:TemplateField>
                              <asp:TemplateField>
                                    <ItemTemplate>
                                        <asp:LinkButton ID="View" runat="server" Text="View" CommandName="view"
                                            CommandArgument='<%#Container.DataItemIndex+1 %>'></asp:LinkButton>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField>
                                    <HeaderTemplate>
                                        Age</HeaderTemplate>
                                    <ItemTemplate>
                                        <asp:Label ID="lblage" Width="80px" runat="server" MaxLength="4" Text='<%# Eval("age") %>'>
                                        </asp:Label>
                                    </ItemTemplate>
                                    <EditItemTemplate>
                                        <asp:TextBox ID="txtage" runat="server" Text='<%# Eval("age") %>'></asp:TextBox>
                                    </EditItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField>
                                    <HeaderTemplate>
                                        BloodGroup</HeaderTemplate>
                                    <ItemTemplate>
                                        <asp:Label ID="lblBloodGroup" Width="100px" runat="server" MaxLength="9" Text='<%# Eval(" BloodGroup") %>'>
                                        </asp:Label>
                                    </ItemTemplate>
                                    <EditItemTemplate>
                                        <asp:TextBox ID="txtBloodGroup" runat="server" Text='<%# Eval(" BloodGroup") %>'></asp:TextBox>
                                    </EditItemTemplate>
                                </asp:TemplateField>


                                <asp:CommandField ShowSelectButton="True" SelectText="Select" />
                                <asp:CommandField DeleteText="Reject" ShowDeleteButton="True" />
                                <asp:CommandField ShowEditButton="true" EditText="Edit" />
                            </Columns>
                            <FooterStyle BackColor="#1C5E55" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="#666666" ForeColor="White" HorizontalAlign="Center" />
                            <SelectedRowStyle BackColor="#C5BBAF" Font-Bold="True" ForeColor="#333333" />
                            <HeaderStyle BackColor="#1C5E55" Font-Bold="True" ForeColor="White" />
                            <EditRowStyle BackColor="#7C6F57" />
                            <AlternatingRowStyle BackColor="White" />
                        </asp:GridView>

On server side this is what i am doing :

protected void GridView3_RowEditing(object sender, GridViewEditEventArgs e)
    {
        DataSet ds = new DataSet();
        tBL objBL = new tBL();
        GridViewRow editedRow = GridView1.Rows[e.NewEditIndex];
        //now search row for your control...
        GridView GridView3 = (GridView)editedRow.FindControl("GridView3");




        GridView3.EditIndex = e.NewEditIndex;

        objtxtToTableBL.ViewBL(dt);
        GridView3.DataSource = dt;
        GridView3.DataBind();

    }


    protected void GridView3_RowCancelling(object sender, GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;

    }

    protected void GridView3_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {

    }

I am binding the nested gridview on rowdatabound of GridView1 and that works fine .

The problem with all this is when i click on the edit button of innergridview(child) it get hide as the page postback . What should i do so that when i click on its edit button the child gridview remains open and it gets hides only when i click on minus button . please help it has already taken 3 days of mine. thank you.