function kigen(){
	today = new Date();
	y=today.getFullYear()-1988;
	m=today.getMonth()+2;
	d=today.getDate();
	daytxt="平成"+y+"年"+m+"月"+d+"日";
	if(document.getElementById){
		document.getElementById("daytime").innerHTML=daytxt;}
		else if(document.all){
			document.all("daytime").innerHTML=daytxt;
			document.all("daytime").style.visibility="visible";}
	}

function popup(a){
	window.open("coupon.html","newwin","width=780,height=420,scrollbars=1");
}