var coup1="HTCUP";

function CalculateOrder(form,couponid) {

 if (couponid == "ny") {
  if (form.ny.value == coup1)
  {	  
  form.discount_rate.value = "10";
  form.discount_rate2.value = "10";
  form.on0.value = "Coupon";
  form.os0.value = "HTCUP - Discount 10%";
  }
 } else {
  if (form.tb.value == coup1)
  {
  form.discount_rate.value = "10";
  form.discount_rate2.value = "10";
  form.on0.value = "Coupon";
  form.os0.value = "HTCUP - Discount 10%";
  }
	 
 }

}