if (parseInt(navigator.appVersion) >= 4) {
if (document.all) 
		document.write('<link rel="stylesheet" href="_script/normal.css" type="text/css">');
	else if (document.getElementById)
		document.write('<link rel="stylesheet" href="_script/normal.css" type="text/css">');
	else if (document.layers) 
		document.location.href = 'update.php';
} else {
document.location.href = 'update.php';
}