function right(e) 
{
	var msg = "Oooops....";
	if (navigator.appName == 'Netscape' && e.which == 3) 
		{
		alert(msg);  // Delete this line to disable but not alert user
		return false;
		}
	else
	if ((navigator.appName == 'Microsoft Internet Explorer' && event.button==2)||(navigator.appName == 'Microsoft Internet Explorer' && event.button==2 && event.ctrlKey == true))
		{
		alert(msg); // Delete this line to disable but not alert user
		return false;
		}
return true;
}
if (navigator.appName == 'Netscape')
{window.document.captureEvents(Event.MOUSEDOWN)}

document.onmousedown = right