var ErrMsg = "Sorry ! Right Click is disabled ";
		
function disableRightClick(btnClick)
	{
	if (navigator.appName == "Netscape" && btnClick.which == 3) // check for netscape and right click
	{ 
	alert(ErrMsg);
	return false;
	}
	else if (navigator.appName =="Microsoft Internet Explorer" && event.button == 2) // for IE and Right Click
	{
	alert(ErrMsg);
	return false;
	}
	}
	document.onmousedown = disableRightClick;