I need some help trying to get a popup window to display the details of the selected checkboxes in a gridview control. I found a site that had some sample code and I got the checkall checkboxes part to work but I can't get the popup window to work. Here is a link to the sample: http://sharepointgroup.wordpress.com...n-popupwindow/. Could someone take look at my code and see where i might be going wrong. Basically I have it where if I hit the "Print Selected Rows" Button nothing happens.

Here is my html code for certificates.aspx:

Code:
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    
      <title></title>


 <script>

        function SelectAllCheckboxes(spanChk) {

            // Added as ASPX uses SPAN for checkbox
            var oItem = spanChk.children;
            var theBox = (spanChk.type == "checkbox") ?
                spanChk : spanChk.children.item[0];
            xState = theBox.checked;
            elm = theBox.form.elements;

            for (i = 0; i < elm.length; i++)
                if (elm[i].type == "checkbox" &&
                         elm[i].id != theBox.id) {
                    //elm[i].click();
                    if (elm[i].checked != xState)
                        elm[i].click();
                    //elm[i].checked=xState;
                }
        }
</script>

     <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
     <script type="text/javascript">
    
         //Print Checkbox to print.aspx
         (function () {
             $("button.print2").hide(); // hide the print button

             // set the postback function for checkall checkbox
             // html control must set to “chkAll” css class
             $("input:checkbox.chkAll").click(function () {
                 xState = $("input:checkbox.chkAll").is(':checked');
                 $("input:checkbox.print2").each(function () {
                     $(this).attr("checked", xState);
                 });
                 if (xState) $("button.print2").show();
                 else $("button.print2").hide();
             });

             // set the postback function for checkboxes
             // html control must set to “print2″ css class
             $("input:checkbox.print2").click(function () {
                 var count = $(":checked.print2").length;
                 if (count == 0) {
                     $("button.print2").hide();
                 }
                 else {
                     $("button.print2").show();
                 }
             });

             // set the postback function for print button
             // html control must set to “print2″ css class
             $("button.print2").click(function () {
                 var idList = "count=" + $(":checked.print2").length;
                 var count = 0;
                 $(":checked.print2").each(function () {
                     idList = idList + "&id" + count + "=" + $(this).val()
                     count++;
                 });
                 window.open('print.aspx?' + idList);
                 return false;
             });
         })();
 </script>

</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:LoginStatus ID="LoginStatus1" runat="server" />
        <br />
        <br />
        
        <br />
        <button id="print2" visible="False"> Print Selected Rows</button>
        <br />
        <br />
        <br />
        <br />
        <br />
        <br />

        <br />
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="CertificateID" DataSourceID="SqlDataSource1" EmptyDataText="There are no data records to display.">
            <Columns>
                               
                <asp:TemplateField ShowHeader="true">
                    <HeaderTemplate>
                        <input id="chkAll" onclick="javascript: SelectAllCheckboxes(this);" runat="server" type="checkbox" class="chkAll"/>                       
                    </HeaderTemplate>
                    <ItemTemplate>                      
                       <input type="checkbox" value='<%#Eval("CertificateID").ToString()%>' class="print2" id="chkSelect" runat="server" />
                    </ItemTemplate>                    
                </asp:TemplateField>
                <asp:BoundField DataField="CertificateID" HeaderText="CertificateID" InsertVisible="False" ReadOnly="True" SortExpression="CertificateID" />
                <asp:BoundField DataField="Customs_Entry" HeaderText="Customs_Entry" SortExpression="Customs_Entry" />             
                <asp:BoundField DataField="Date_Certificate" HeaderText="Date_Certificate" SortExpression="Date_Certificate" />
                <asp:BoundField DataField="Invoice_Number" HeaderText="Invoice_Number" SortExpression="Invoice_Number" />
                <asp:BoundField DataField="Product_Number" HeaderText="Product_Number" SortExpression="Product_Number" />
                <asp:BoundField DataField="Product_Name" HeaderText="Product_Name" SortExpression="Product_Name" />
                <asp:BoundField DataField="Product_Category" HeaderText="Product_Category" SortExpression="Product_Category" />
                <asp:BoundField DataField="CPSC_Regulation" HeaderText="CPSC_Regulation" SortExpression="CPSC_Regulation" />
                <asp:BoundField DataField="Date_Manufactured" HeaderText="Date_Manufactured" SortExpression="Date_Manufactured" />
                <asp:BoundField DataField="Manufacturer" HeaderText="Manufacturer" SortExpression="Manufacturer" />
                <asp:BoundField DataField="Date_Tested" HeaderText="Date_Tested" SortExpression="Date_Tested" />
                <asp:BoundField DataField="Test_Lot_ID" HeaderText="Test_Lot_ID" SortExpression="Test_Lot_ID" />
                <asp:BoundField DataField="Name_Laboratory" HeaderText="Name_Laboratory" SortExpression="Name_Laboratory" />
            </Columns>
            
        </asp:GridView>
        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:LocalSqlServer %>" DeleteCommand="DELETE FROM [Certificate] WHERE [CertificateID] = @CertificateID" InsertCommand="INSERT INTO [Certificate] ([Customs_Entry], [Date_Certificate], [Invoice_Number], [Product_Number], [Product_Name], [Product_Category], [CPSC_Regulation], [Date_Manufactured], [Manufacturer], [Date_Tested], [Test_Lot_ID], [Name_Laboratory]) VALUES (@Customs_Entry, @Date_Certificate, @Invoice_Number, @Product_Number, @Product_Name, @Product_Category, @CPSC_Regulation, @Date_Manufactured, @Manufacturer, @Date_Tested, @Test_Lot_ID, @Name_Laboratory)" ProviderName="<%$ ConnectionStrings:LocalSqlServer.ProviderName %>" SelectCommand="SELECT [CertificateID], [Customs_Entry], [Date_Certificate], [Invoice_Number], [Product_Number], [Product_Name], [Product_Category], [CPSC_Regulation], [Date_Manufactured], [Manufacturer], [Date_Tested], [Test_Lot_ID], [Name_Laboratory] FROM [Certificate]" UpdateCommand="UPDATE [Certificate] SET [Customs_Entry] = @Customs_Entry, [Date_Certificate] = @Date_Certificate, [Invoice_Number] = @Invoice_Number, [Product_Number] = @Product_Number, [Product_Name] = @Product_Name, [Product_Category] = @Product_Category, [CPSC_Regulation] = @CPSC_Regulation, [Date_Manufactured] = @Date_Manufactured, [Manufacturer] = @Manufacturer, [Date_Tested] = @Date_Tested, [Test_Lot_ID] = @Test_Lot_ID, [Name_Laboratory] = @Name_Laboratory WHERE [CertificateID] = @CertificateID">
            <DeleteParameters>
                <asp:Parameter Name="CertificateID" Type="Int32" />
            </DeleteParameters>
            <InsertParameters>
                <asp:Parameter Name="Customs_Entry" Type="String" />
                <asp:Parameter Name="Date_Certificate" Type="String" />
                <asp:Parameter Name="Invoice_Number" Type="String" />
                <asp:Parameter Name="Product_Number" Type="String" />
                <asp:Parameter Name="Product_Name" Type="String" />
                <asp:Parameter Name="Product_Category" Type="String" />
                <asp:Parameter Name="CPSC_Regulation" Type="String" />
                <asp:Parameter Name="Date_Manufactured" Type="String" />
                <asp:Parameter Name="Manufacturer" Type="String" />
                <asp:Parameter Name="Date_Tested" Type="String" />
                <asp:Parameter Name="Test_Lot_ID" Type="String" />
                <asp:Parameter Name="Name_Laboratory" Type="String" />
            </InsertParameters>
            <UpdateParameters>
                <asp:Parameter Name="Customs_Entry" Type="String" />
                <asp:Parameter Name="Date_Certificate" Type="String" />
                <asp:Parameter Name="Invoice_Number" Type="String" />
                <asp:Parameter Name="Product_Number" Type="String" />
                <asp:Parameter Name="Product_Name" Type="String" />
                <asp:Parameter Name="Product_Category" Type="String" />
                <asp:Parameter Name="CPSC_Regulation" Type="String" />
                <asp:Parameter Name="Date_Manufactured" Type="String" />
                <asp:Parameter Name="Manufacturer" Type="String" />
                <asp:Parameter Name="Date_Tested" Type="String" />
                <asp:Parameter Name="Test_Lot_ID" Type="String" />
                <asp:Parameter Name="Name_Laboratory" Type="String" />
                <asp:Parameter Name="CertificateID" Type="Int32" />
            </UpdateParameters>
        </asp:SqlDataSource>
        <br />
        <br />
        <br />
        <br />
    
    </div>
    </form>
 </body>
</html>

Here is my vb code for certificates.aspx:

Code:
Imports System.Text

Public Class WebForm4
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load


    End Sub


    Protected Sub GridView1_SelectedIndexChanged(sender As Object, e As EventArgs) Handles GridView1.SelectedIndexChanged
        'Check All Checkboxes Code:
        ' StringBuilder object
        Dim str As New StringBuilder()

        ' Select the checkboxes from the GridView control
        For i As Integer = 0 To GridView1.Rows.Count - 1
            Dim row As GridViewRow = GridView1.Rows(i)
            Dim isChecked As Boolean = DirectCast(row.FindControl("chkSelect"), CheckBox).Checked

            If isChecked Then
                ' Column 2 is the name column
                str.Append(GridView1.Rows(i).Cells(2).Text)
            End If
        Next

        ' prints out the result
        Response.Write(str.ToString())


    End Sub
End Class
Here is my code for Print.aspx:

Code:
Public Class WebForm6
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load


        If Not Page.IsPostBack Then
            Dim pageCount As Integer = 1
            Dim Count As Integer = Convert.ToInt32(Request.Params(0).ToString())
            Dim IDList As New List(Of Integer)()
            For i As Integer = 0 To Count - 1
                Dim ID As String = Request.Params("id" & i.ToString()).ToString()
                IDList.Add(Convert.ToInt32(ID))
            Next
        End If



    End Sub

End Class