function right(mousebutton)
{
	var msg1 = "The right-click option is not available for this page";
	
	if (navigator.appName == 'Netscape' && mousebutton.which==3)
	{
		alert(msg1);
		return false;
	}
	else
	
	if (navigator.appName == 'Microsoft Internet Explorer' && event.button == 2)
	{
		alert(msg1);
		return false;
	}
	return true;
}
document.onmousedown = right;