//  ---------------------------------------------------------------------------
//	update promotions code
//  ---------------------------------------------------------------------------
function updatePromotionCode(url) {            
    var promoCode = $(".txtPromotionCode").val();
    if (promoCode == "" || promoCode == null) {
        alert("You have not entered a promotion code.");
    } else {
        document.location.href = url + "&promocode=" + promoCode;
    }
}