itextsharp: footer not appearing

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C#

ASP.NET

C#4.0

itextsharp

Hi,
I am creating the pdf of the large tables dynamically. so i need to add a footer line and a page numbers to the document. i have applied code for it and it worked. but later i made some changes so it disappears and not coming back after reverting all the code too. so please tell me where i am doing the mistake.....
code for reference......
i declared the document in global with page size as,

Document document = new Document(PageSize.A4, -60, -60, 30, 30);

i have added the class as following for itextsharp v 5.3.3

public class FooterPDF : iTextSharp.text.pdf.PdfPageEventHelper
{
    int i = 0;
    public override void OnEndPage(PdfWriter writer, Document document)
    {        
        i += 1;
        //base.OnEndPage(writer, document);
        PdfPTable footerTable = new PdfPTable(1);
        footerTbl.TotalWidth = 216f;
        footerTable.TotalWidth = document.PageSize.Width;
        footerTable.LockedWidth = true;
        footerTable.SetWidths(widths);
        footerTable.HorizontalAlignment = Element.ALIGN_CENTER;
        Paragraph para = new Paragraph("© VIP FINANCIAL EDUCATION");
        PdfPCell cell = new PdfPCell(para); cell.Border = 1; cell.PaddingLeft = 10;
        footerTable.AddCell(cell);
        para = new Paragraph(i.ToString());
        cell = new PdfPCell(para);
        cell.HorizontalAlignment = Element.ALIGN_RIGHT;
        cell.Border = 0;
        cell.PaddingRight = 10;
        footerTable.AddCell(cell);        
        footerTable.WriteSelectedRows(20, -1, 10, footerTable.TotalHeight, writer.DirectContent);                   
    }
}

and nothing is working.