function CalculateOrder(form) {
	if (form.coup.value == "WINGS79"){
	 	form.discount_rate.value = "20";
	 	form.discount_rate2.value = "20";
	}
	else if (form.coup.value == "SHIPFREE"){
	 	form.shipping.value = "";
	 	form.no_shipping.value = "1";
	}
}