function mapopen(latitude, longitude, sname) {
	document.getElementById("latitude").value = latitude;
	document.getElementById("longitude").value = longitude;
	document.getElementById("sname").value = sname;
	window.open('http://www.syakyo-niigatacity.or.jp/gmap.html', 'map', 'width=705, height=525, menubar=no, toolbar=no, scrollbars=no').focus(); 
	return false;
}