NS4 = (document.layers);
IE4 = (document.all);
ver4 = (NS4 || IE4);
IE5 = (IE4 && navigator.appVersion.indexOf("5.")!=-1);
isMac = (navigator.appVersion.indexOf("Mac") != -1);
isMenu = (NS4 || (IE4 && !isMac) || (IE5 && isMac));
function popUp(){return};
function popDown(){return};
if (!ver4) event=null;


function changeImg(obj, img) {
   document[obj].src = img;
}

function LoadImage(filename) {
   img = new Image();
   img.src = filename;
   return img;
}

menu_norm = LoadImage("images/menu_norm.gif");
menu_over = LoadImage("images/menu_over.gif");



var message="Azione non consentita.";
function click(e)
   {
   if (document.all) {
      if (event.button == 2) {
         alert(message);
         return false;
      }
   }
   if (document.layers) {
      if (e.which == 3) {
         alert(message);
         return false;
      }
   }
   }
   if (document.layers) {
      document.captureEvents(Event.MOUSEDOWN);
   }
   document.onmousedown=click;