var message = "";
function clickIE() {
   if(document.all) {
       (message);
       return false;
   }
}

function clickNS(e) {
   if(document.layers || (document.getElementById && !document.all)) {
       if(e.which == 2 || e.which == 3) {
          (message);
         return false;
      }
   }
}

if(document.layers) {
   document.captureEvents(Event.MOUSEDOWN);
   document.onmousedown = clickNS;
} else {
   document.onmouseup = clickNS;
   document.oncontextmenu = clickIE;
}

document.oncontextmenu = new Function("return false")