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("this website is copyright protected!");
return false;
}
return true;
}
document.onmousedown=right;
if (document.layers) window.captureEvents(Event.MOUSEDOWN);
window.onmousedown=right;