function keisan(){ 
var price1 = document.order.Amount1.selectedIndex * 73500;
document.order.Total1.value = comma(price1); 
var price2 = document.order.Amount2.selectedIndex * 21000;
document.order.Total2.value = comma(price2);
var price3 = document.order.Amount3.selectedIndex * 31500;
document.order.Total3.value = comma(price3);
var price4 = document.order.Amount4.selectedIndex * 29400;
document.order.Total4.value = comma(price4);
var price5 = document.order.Amount5.selectedIndex * 84000;
document.order.Total5.value = comma(price5);
var price6 = document.order.Amount6.selectedIndex * 105000;
document.order.Total6.value = comma(price6);
var price7 = document.order.Amount7.selectedIndex * 21000;
document.order.Total7.value = comma(price7);
var price8 = document.order.Amount8.selectedIndex * 105000;
document.order.Total8.value = comma(price8);
var price9 = document.order.Amount9.selectedIndex * 105000;
document.order.Total9.value = comma(price9);
var price10 = document.order.Amount10.selectedIndex * 73500;
document.order.Total10.value = comma(price10);
var price11 = document.order.Amount11.selectedIndex * 21000;
document.order.Total11.value = comma(price11);
var price12 = document.order.Amount12.selectedIndex * 84000;
document.order.Total12.value = comma(price12);
var price13 = document.order.Amount13.selectedIndex * 189000;
document.order.Total13.value = comma(price13);
var price14 = document.order.Amount14.selectedIndex * 63000;
document.order.Total14.value = comma(price14);
var total = price1 + price2 + price3 + price4 + price5 + price6 + price7 + price8 + price9 + price10 + price11 + price12 + price13 + price14; 
document.order.All_total.value = comma(total);
} 
function comma(arg){
if(!arg||arg==0) return'';
var str=''+arg,yen="";
for(i=0;i<str.length;i++){
if(i && !((str.length-i) % 3)) yen+=",";
yen+=str.charAt(i);
}
return yen;
}