function recompute() {
 var banner=   document.form1.banner.value;
 var bsize=    document.form1.bsize.value;
 var bsizeyoko=document.form1.bsizeyoko.value;
 var bsizetate=document.form1.bsizetate.value;
//alert(banner + "<br>" + bsize + "<br>" + bsizeyoko + bsizetate );
//exit;

	document.getElementById("price").innerHTML= 0;

 var price= 0;
 var data= "";
 var url= 'http://www.bannerseisaku.com/order/re_compute.php?b=' + banner +'&s='+ bsize +'&y='+ bsizeyoko +'&t='+ bsizetate;
 urla= encodeURI(url);
 var req= new XMLHttpRequest();
 req.open('POST', urla, false);                   // 同期通信
 req.send(null);
 if(req.status == 200) {
	data= req.responseText;                       // JSコマンドのSAVE
	eval(data);                                   // JSコマンドの実行 var price=xxx;
//alert(data);
 }
 else
	alert("XMLHttpRequest??"+req.status);

// ------------------------------------------
	if( price == 0 || price == "'0'" )
		alert("ご注文内容をご確認下さい。");
	else
		document.getElementById("price").innerHTML= price;
}