<script> function stopmouse(e) { if (navigator.appName == 'Netscape' && (e.which == 3 || e.which == 2)) return false; else if (navigator.appName == 'Microsoft Internet Explorer' && (event.button == 2 || event.button == 3)) { alert("ข้อความที่จะให้ปรากฏ"); return false; } return true; } document.onmousedown=stopmouse; if (document.layers) window.captureEvents(Event.MOUSEDOWN); window.onmousedown=stopmouse; </script>