public void ValidateThatButtonIsHidden(string button)
    {
        IWebElement theButton = null;

        if (button.ToLower().Trim() == "submit an order")
        { theButton = FindElement(By.Id(_elementBtnId1)); }

        else if (button.ToLower().Trim() == "validate order")
        { theButton = FindElement(By.Id(_elementBtnId2)); }


        //Verifying that an element is not visible
        Assert.False(IsELementVisible(theButton));

    }