function popNavi() {
	var pNavi;
	var wSize = 500;
	var hSize = 650;
	pNavi = 'map.html';
	var xPoint = (screen.width - wSize) / 2;
	var yPoint = (screen.height - hSize) / 2;
	var popUpSpec = 'top='+yPoint+',left='+xPoint+',width='+wSize+',height='+hSize+',scrollbars=no';
	var opWindow = window.open(pNavi,'pop',popUpSpec);
	opWindow.window.focus();
}