function nrcIE(){
if (document.all){
return false;
}
}

function nrcContTextMenu(){
alert("Copyright S & G S.r.l.")
return false;
}

function nrcNS(e){
if(document.layers||(document.getElementById&&!document.all)){ 
if (e.which==2||e.which==3){
return false;}
}
}
  
if (document.layers){
document.captureEvents(Event.MOUSEDOWN);
document.onmousedown=nrcNS;
}else{
document.onmouseup=nrcNS;document.oncontextmenu=nrcIE;
}
document.oncontextmenu=nrcContTextMenu;