window.onload = function() {
var element = document.getElementById('contenitore');
element.onselectstart = function() { return false; } // ie
element.onmousedown = function() { return false; } // mozilla
}

var message="(c) Società Storica Novarese";
function clickIE4(){
 if (event.button==2)
{ alert(message); return false; }}

function clickNS4(e){
if (document.layers||document.getElementById&&!document.all){
 if (e.which==2||e.which==3){ alert(message); return false; }}}
if (document.layers){
document.captureEvents(Event.MOUSEDOWN); document.onmousedown=clickNS4; }
else if (document.all&&!document.getElementById){
document.onmousedown=clickIE4; }
document.oncontextmenu=new Function("alert(message);return false")
//form tags to omit in NS6+:
var omitformtags=["input", "textarea", "select"]
omitformtags=omitformtags.join("|")

function disableselect(e){
if (omitformtags.indexOf(e.target.tagName.toLowerCase())==-1)
return false}

function reEnable(){
return true}
if (typeof document.onselectstart!="undefined")
document.onselectstart=new Function ("return false")
else{
document.onmousedown=disableselect
document.onmouseup=reEnable}