function protector(mouseevent) {
	if (navigator.appName == 'Netscape' && (mouseevent.which == 2 || mouseevent.which == 3))
		return false;
	else if (navigator.appName == 'Microsoft Internet Explorer' && (event.button == 2 || event.button == 3)) {
		alert("All photos and contents in this website are copyright (c) by Bluesky Alliance Co., Ltd. All rights reserved.");
		return false;
	} else return true;
}
document.onmousedown=protector;
if (document.layers) window.captureEvents(Event.MOUSEDOWN);
window.onmousedown=protector;