Search GridView records (data) on TextBox KeyPress using jQuery in Master page ASP.Net

Dear Experts,

I tried to modify downloaded code from http://aspsnippets.com/Articles/Search-GridView-records-data-on-TextBox-KeyPress-using-jQuery-in-ASPNet.aspx to use with content pages/ master page by placing javascript at master page and put below code at the content page, But the when i type somethng on the text nothing filters.

Looking for your valuable suggestions or any other link to get an idea to filter gridivew using master page.

* I am using VS 2005

* GVPRFInquiry => Gridivew

* PR.PRFInquiry(BadgeNo) => return dataset containing results

* txtSearch  => text box created at the top of gridview.

Below query brings data to the gridivew on page load.

 If Not Me.IsPostBack Then
            Dim ds As New DataSet
            ds = PR.PRFInquiry(BadgeNo)
            GVPRFInquiry.DataSource = ds
            GVPRFInquiry.DataMember = "DataSet"
            GVPRFInquiry.DataBind()
        End If

below code create text box inside gridview to filter and calls the javascript.

Protected Sub OnDataBound(ByVal sender As Object, ByVal e As EventArgs)
        If (Not Master.Page.ClientScript.IsStartupScriptRegistered("function")) Then
            Master.Page.ClientScript.RegisterStartupScript(Me.GetType(), "function", "fucntion();", True)
        End If
        Dim row As New GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal)
        For i As Integer = 0 To GVPRFInquiry.Columns.Count - 1
            Dim cell As New TableHeaderCell()
            Dim txtSearch As New TextBox()

            txtSearch.Attributes("placeholder") = GVPRFInquiry.Columns(i).HeaderText
            txtSearch.CssClass = "search_textbox"
            cell.Controls.Add(txtSearch)
            row.Controls.Add(cell)

        Next
        GVPRFInquiry.HeaderRow.Parent.Controls.AddAt(1, row)
    End Sub

 <asp:GridView ID="GVPRFInquiry" runat="server" BackColor="AntiqueWhite" BorderColor="Black"
                    CellPadding="3" ForeColor="Black" Font-Size="8pt" Font-Names="verdana" AutoGenerateColumns="False"
                    Width="799px" OnDataBound="OnDataBound">
                    <Columns>
                        <asp:BoundField DataField="PRFNo" HeaderText="PRF No" InsertVisible="False" ReadOnly="True">
                            <HeaderStyle Wrap="False" />
                            <ItemStyle Width="100px" />
                        </asp:BoundField>
                        <asp:BoundField DataField="RequestedDate" HeaderText="Requested Date" DataFormatString="{0:d}"
                            HtmlEncode="False" SortExpression="Name">
                            <HeaderStyle Wrap="False" />
                            <ItemStyle Width="150px" />
                            <ControlStyle Width="150px" />
                        </asp:BoundField>
                    </Columns>
                    <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
                    <RowStyle BackColor="#FFFBD6" ForeColor="#333333" />
                    <PagerStyle BackColor="#FFCC66" ForeColor="#333333" HorizontalAlign="Center" />
                    <SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="Navy" />
                    <HeaderStyle BackColor="InactiveCaption" Font-Bold="True" ForeColor="White" />
                    <AlternatingRowStyle BackColor="White" />
                </asp:GridView>