document.oncontextmenu = function() { return false } function right(e) { var msg = "คลิกเพื่อ???"; if (navigator.appName == 'Netscape' && e.which == 3) { alert(msg); //- return false; } else if (navigator.appName == 'Microsoft Internet Explorer' && event.button==2) { alert(msg); //- return false; } return true;} document.onmousedown = right;