protected void btChPassSave_Click(object sender, EventArgs e)
        {
            hfTab.Value = "profile";
            string oldPass = tbChPassCurr.Text;
            string newPass = tbChPassNew.Text;
            string empId = Session["EmployeeId"].ToString();
            string oldHashedPassword = AppSecurity.HashSHA1(oldPass + Session["USER_GUID"].ToString());
            string newHashedPassword = AppSecurity.HashSHA1(newPass + Session["USER_GUID"].ToString());
            DataAccessLayer dal = new DataAccessLayer();
            int? ret = dal.UpdatePasswordUser(empId, oldHashedPassword, newHashedPassword);
            switch (ret)
            {

                case 1:
                    {
                        //show success message
                        editAlert.Style.Add("display", "inline");
                        editAlert.Attributes.Add("class", "alert-success");
                        editAlert.InnerText = "Password Reset Successfully";
                    }
                    break;
                case -1:
                    {
                        //invalid password
                        editAlert.Style.Add("display", "inline");
                        editAlert.Attributes.Add("class", "alert-danger");
                        editAlert.InnerText = "Incorrect Old Password";

                    }
                    break;
                case 0:
                    {
                        //invalid password
                        editAlert.Style.Add("display", "inline");
                        editAlert.Attributes.Add("class", "alert-danger");
                        editAlert.InnerText = "Database Error Occured. Information could not be saved.";

                    }
                    break;
            }
        }