// JavaScript Document

function keisan(){
	with(document.form1){
		num=tuboa.value*tubob.value;
		num = String( num );
		while( num != ( num = num.replace( /^(\d+)(\d{3})/ , "$1,$2" ) ) ){};
		tubo.value=num;
	}
}

function keisan2(){
	with(document.form2){
		num=yanea.value*yaneb.value;
		num = String( num );
		while( num != ( num = num.replace( /^(\d+)(\d{3})/ , "$1,$2" ) ) ){};
		yane.value=num;
	}
	with(document.form3){
		num=yukaa.value*yukab.value;
		num = String( num );
		while( num != ( num = num.replace( /^(\d+)(\d{3})/ , "$1,$2" ) ) ){};
		yuka.value=num;
	}
}