protected void ApprovePTO(object sender, EventArgs e)
        {
            int id = Int32.Parse(((sender as LinkButton).CommandArgument).ToString());

            connString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
            data       = new DBAccess(connString);
            data.ApprovePTORequest(id);
            if (!data.error)
            {
                LoadNewPTORequests();
            }
            else
            {
                lblErrorMessage.Text = data.errorMessage;
            }
        }