var coup1="5GABE";
var coup2="10KIRS";
var coup3="15ANGE";
var coup4="20JONN";
var coup5="FRSHPSW";
var coup6="95L4P50";
var coup7="25JENN";
var coup8="15AE54";
var coup9="35COOK";
var coup10="45LOVE";
var coup12="15DUPO";
var coup14="DP100";
var coup15="FBN100";
var coup17="Goog10";
var coup16="SAVE01";
//var coup18="FB100";
var coup18="FB10";

function CalculateOrder(form) {

 if (form.text1.value == coup1)
 {
 form.discount_rate.value = "5";
 form.discount_rate2.value = "5";
 form.on1.value = "Coupon";
 form.os1.value = "Discount 5%";
 }
  if (form.text1.value == coup2)
 {
 form.discount_rate.value = "10";
 form.discount_rate2.value = "10";
 form.on1.value = "Coupon";
 form.os1.value = "Discount 10%";
 }
  if (form.text1.value == coup3)
 {
 form.discount_rate.value = "15";
 form.discount_rate2.value = "15";
 form.on1.value = "Coupon";
 form.os1.value = "Discount 15%";
 }
 
 if (form.text1.value == coup4)
 {
 form.discount_rate.value = "20";
 form.discount_rate2.value = "20";
 form.on1.value = "Coupon";
 form.os1.value = "Discount 20%";
 }
 
 if (form.text1.value == coup6)
 {
 form.discount_rate.value = "50";
 form.discount_rate2.value = "50";
 form.on1.value = "Coupon";
 form.os1.value = "Discount 50%";
 }
 
  if (form.text1.value == coup7)
 {
 form.discount_rate.value = "25";
 form.discount_rate2.value = "25";
 form.on1.value = "Coupon";
 form.os1.value = "Discount 25%";
 }
 
 
  if (form.text1.value == coup5)
 {
 form.shipping.value = "0.000";
 }
 
   if (form.text1.value == coup8)
 {
 form.discount_rate.value = "15";
 form.discount_rate2.value = "15";
 form.on1.value = "Coupon";
 form.os1.value = "Discount 15%";
 }
 
  if (form.text1.value == coup9)
 {
 form.discount_rate.value = "35";
 form.discount_rate2.value = "35";
 form.on1.value = "Coupon";
 form.os1.value = "Discount 35%";
 }
 
  if (form.text1.value == coup10)
 {
 form.discount_rate.value = "45";
 form.discount_rate2.value = "45";
 form.on1.value = "Coupon";
 form.os1.value = "Discount 45%";
 }
 
if (form.text1.value == coup12)
 {
 form.discount_rate.value = "15";
 form.discount_rate2.value = "15";
 form.on1.value = "Coupon";
 form.os1.value = "Discount 15%";
 }
 
if (form.text1.value == coup15 && (form.item_number.value == "092875T" || form.item_number.value == "092875B" || form.item_number.value == "092875N" || form.item_number.value == "092875SN" || form.item_number.value == "888-04" || form.item_number.value == "888-01"))
 {
 form.discount_rate.value = "14.38848921"; /* price : $695*/
 form.discount_rate2.value = "14.38848921";
 form.on1.value = "Coupon";
 form.os1.value = "Discount FACEBOOK USD 100";
 }

 
if (form.text1.value == coup14 && (form.item_number.value == "M7605G" || form.item_number.value == "M7605RS" || form.item_number.value == "M7605GT" || form.item_number.value == "M7605VI" || form.item_number.value == "M7605GN"))
 {
 form.discount_rate.value = "15.50387597"; /* price : $645*/
 form.discount_rate2.value = "15.50387597";
 form.on1.value = "Coupon";
 form.os1.value = "Discount DuPont USD 100";
 }


if (form.text1.value == coup15 && (form.item_number.value == "M7605G" || form.item_number.value == "M7605RS" || form.item_number.value == "M7605GT" || form.item_number.value == "M7605VI" || form.item_number.value == "M7605GN" || form.item_number.value == "121854-3" || form.item_number.value == "121854-4" || form.item_number.value == "121854-5" || form.item_number.value == "121854-7" || form.item_number.value == "121854-9" || form.item_number.value == "121854-10" || form.item_number.value == "121854-11" || form.item_number.value == "121854-13"))
 {
 form.discount_rate.value = "15.50387597"; /* price : $645*/
 form.discount_rate2.value = "15.50387597";
 form.on1.value = "Coupon";
 form.os1.value = "Discount FACEBOOK USD 100";
 }


if (form.text1.value == coup15 && (form.item_number.value == "dG4430T" || form.item_number.value == "dG4430BP" || form.item_number.value == "dG4430TB" || form.item_number.value == "888-03" || form.item_number.value == "888-02" || form.item_number.value == "888-05"))
 {
 form.discount_rate.value = "13.42281879"; /* price : $745 */
 form.discount_rate2.value = "13.42281879";
 form.on1.value = "Coupon";
 form.os1.value = "Discount FACEBOOK USD 100";
 }

if (form.text1.value == coup15 && (form.item_number.value == "CHR-1979-1" || form.item_number.value == "CHR-1979-4"))
 {
 form.discount_rate.value = "11.83431953"; /* price : $845 */
 form.discount_rate2.value = "11.83431953";
 form.on1.value = "Coupon";
 form.os1.value = "Discount FACEBOOK USD 100";
 }
 
if (form.text1.value == coup15 && (form.item_number.value == "CHR-1979-2" || form.item_number.value == "CHR-1979-3"))
 {
 form.discount_rate.value = "12.57861635"; /* price : $795 */
 form.discount_rate2.value = "12.57861635";
 form.on1.value = "Coupon";
 form.os1.value = "Discount FACEBOOK USD 100";
 }


if (form.text1.value == coup15 && (form.item_number.value == "00TO00" || form.item_number.value == "G-280223" || form.item_number.value == "RG-280223" || form.item_number.value == "RGW-280223"))
 {
 form.discount_rate.value = "10.58201058"; /* price : $945 */
 form.discount_rate2.value = "10.58201058";
 form.on1.value = "Coupon";
 form.os1.value = "Discount FACEBOOK USD 100";
 }

if (form.text1.value == coup15 && (form.item_number.value == "121854-1" || form.item_number.value == "121854-2" || form.item_number.value == "121854-6" || form.item_number.value == "121854-8" || form.item_number.value == "121854-14" || form.item_number.value == "121854iK" || form.item_number.value == "121854iKB"))
 {
 form.discount_rate.value = "16.80672269"; /* price : $595 */
 form.discount_rate2.value = "16.80672269";
 form.on1.value = "Coupon";
 form.os1.value = "Discount FACEBOOK USD 100";
 }



 if (form.text1.value == coup16 && (form.item_number.value == "CHR-1979-1" || form.item_number.value == "CHR-1979-2"  || form.item_number.value == "CHR-1979-3" || form.item_number.value == "CHR-1979-4" || form.item_number.value == "G-280223" || form.item_number.value == "RG-280223" || form.item_number.value == "RGW-280223"))
 {
 var final_price = 695; // calculations based on fixed final price: $695 
 var new_discrate = (form.amount.value-final_price)/(form.amount.value/100); 
 form.discount_rate.value = new_discrate; 
 form.discount_rate2.value = new_discrate;
 form.on1.value = "Coupon";
 form.os1.value = "Discount SAVE01";
 }
 
 if (form.text1.value == coup17)
 {
 form.discount_rate.value = "10";
 form.discount_rate2.value = "10";
 form.on1.value = "Coupon";
 form.os1.value = "Discount 10%";
 }
 
 // if (form.text1.value == coup18)
 // {
 // var final_discount_price = 100; /* calculations based on fixed discount price: $100 */
 //var new_discrate = final_discount_price/(form.amount.value/100);
 //alert('new_discrate=' + new_discrate);
 // form.discount_rate.value = new_discrate; 
 //form.discount_rate2.value = new_discrate;
 //form.on1.value = "Coupon FB100";
 //form.os1.value = "Discount: $100";
 //}
 
 if (form.text1.value == coup18)
 {
 form.discount_rate.value = "10";
 form.discount_rate2.value = "10";
 form.on1.value = "Coupon FB10";
 form.os1.value = "Discount 10%";
 }
 
}