for (var i=0; i<document.images.length; i++) {
	document.images[i].onmousedown=destro
 }

 for (var i=0; i<document.links.length; i++) {
	document.links[i].onmousedown=destro
 }
 function destro(ev) {
	if (navigator.appName == 'Netscape' && (ev.which == 3 || ev.which == 2)) {
		alert("Tasto destro disabilitato")
		return false
	}
	else {
		if (navigator.appName == 'Microsoft Internet Explorer' && 
		   (event.button == 2 || event.button == 3)) {
			alert("Tasto destro disabilitato")
		}
		return false
 	}
 return true
 }
 document.onmousedown=destro
 if (document.layers) {
	window.captureEvents(Event.MOUSEDOWN)
	window.onmousedown=destro
 }