程式設計@筆記

<SCRIPT language=JavaScript>
<!-- begin
document.onmousedown=click;
document.onkeydown=click;
if (document.layers) window.captureEvents(Event.MOUSEDOWN); window.onmousedown=click;
if (document.layers) window.captureEvents(Event.KEYDOWN); window.onkeydown=click;
function click(e){
if (navigator.appName == 'Netscape'){
if (e.which != 1){
alert("無法使用！");
return false;}}
if (navigator.appName == "Microsoft Internet Explorer"){
if (event.button != 1){
alert("無法使用！");
return false;}}}
// end -->
</SCRIPT>