function right(e) 
{
	if (navigator.appName == 'Netscape' && 	(e.which == 3 || e.which == 2))	return false;
	else if (navigator.appName == 'Microsoft Internet Explorer' && 	(event.button == 2 || event.button == 3)) 
	{
		alert("Sorry, you do not have permission to right click.");
		return false;
	}
	return true;
}

document.onmousedown=right;
document.onmouseup=right;
if (document.layers) window.captureEvents(Event.MOUSEDOWN);
if (document.layers) window.captureEvents(Event.MOUSEUP);
window.onmousedown=right;
window.onmouseup=right;