var unitprice = 1480;
var weight = 300;

var unitprice2 = 4000;
var weight2 = 1000;

var taxp = 0.05;
var souryou  = 0;
var defaultsouryou = 315;
 
 
function culcu(){
 
var orders = document.culcuform['suuryou'].value;
var orders2 = document.culcuform['suuryou2'].value;

for (var i = 0; i < document.culcuform.shiharai.length; i++)
if(document.culcuform.shiharai[i].checked == true)
var payment= document.culcuform.shiharai[i].value;
 
 
 if(orders == ""){
	orders = 0;
}

 if(orders2 == ""){
	orders2 = 0;
}

var totalweight = eval(orders)*eval(weight) + eval(orders2)*eval(weight2);

var price = eval(orders)* eval(unitprice) + eval(orders2)* eval(unitprice2);

var syoukeiElement = document.getElementById("syoukei_val") ;
        syoukeiElement.replaceChild(document.createTextNode(price),
                                  syoukeiElement.childNodes[0]);
document.culcuform.syoukei.value = price;



var taxprice = eval(orders)* eval(unitprice)* taxp + eval(orders2)* eval(unitprice2)* taxp;

var taxElement = document.getElementById("tax_val") ;
        taxElement.replaceChild(document.createTextNode(taxprice),
                                  taxElement.childNodes[0]);
document.culcuform.tax.value = taxprice;
 
if(totalweight < 10000 && totalweight > 0){
	souryouprice = defaultsouryou;
}
else{
	souryouprice  = 0;
};
 
var souryouElement = document.getElementById("souryou_val") ;
        souryouElement.replaceChild(document.createTextNode(souryouprice),
                                  souryouElement.childNodes[0]);
document.culcuform.souryou.value = souryouprice;
 
var totalprice = eval(price) + eval(taxprice) + eval(souryouprice);
document.culcuform.goukei.value = totalprice;

if(payment == 2){

if(totalweight < 6000){
daibikiprice = 315;
}
else{
daibikiprice = 0;
}

totalprice = eval(totalprice) + eval(daibikiprice);
var daibikiElement = document.getElementById("daibiki_val") ;
        daibikiElement.replaceChild(document.createTextNode(daibikiprice),
                                  daibikiElement.childNodes[0]);

document.culcuform.daibiki.value = daibikiprice;
document.getElementById("daibiki").style.display = "block";
document.getElementById("meigi").style.display = "none";

}

else{

document.getElementById("daibiki").style.display = "none";
document.getElementById("meigi").style.display = "block";

daibikiprice = 0;

}


var totalElement = document.getElementById("total_val") ;
        totalElement.replaceChild(document.createTextNode(totalprice),
                                  totalElement.childNodes[0]);
document.culcuform.goukei.value = totalprice;

 
};