function logout() {
	var leftPoint = screen.width + 100;
	var topPoint = screen.height + 100;
	window.open('/system/checkLogout.html','','width=100,height=100,left=' + leftPoint + ',top=' + topPoint + ',resizable=yes');
}

function logoutAutomatically() {
	var leftPoint = screen.width + 100;
	var topPoint = screen.height + 100;
	window.open('/system/autoLogout.jsp','','width=100,height=100,left=' + leftPoint + ',top=' + topPoint + ',resizable=yes');
	window.setTimeout("window.location.href = '/'", 3000);
}