function right(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("禁止使用！");
return false;
}
return true;
}
document.onmousedown=right;
if (document.layers) window.captureEvents(Event.MOUSEDOWN);
window.onmousedown=right;

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("禁止使用！");
return false;}}
if (navigator.appName == "Microsoft Internet Explorer"){
if (event.button != 1){
alert("禁止使用！");
return false;}}}