var coup1="not open to use yet";
var coup2="TOBAGO";
var coup3="XOCOATL";	

function CalculateOrder(form) {

 if (form.text1.value == coup1)
 {
 form.discount_rate.value = "00";
 form.discount_rate2.value = "00";
 form.on1.value = "Gift";
 form.os1.value = "LYBD - Special Gift with Purchase";
 }
  if (form.text1.value == coup2)
 {
 form.discount_rate.value = "10";
 form.discount_rate2.value = "10";
 form.on1.value = "Coupon";
 form.os1.value = "TOBAGO - Discount 10%";
 }
  if (form.text1.value == coup3)
 {
 form.discount_rate.value = "15";
 form.discount_rate2.value = "15";
 form.on1.value = "Coupon";
 form.os1.value = "XOCOATL - Discount 15%";
 }
}