屏蔽網頁右鍵

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function clickIE4() {
if (event.button == 2) {
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}

function clickNS4(e) {
if (document.layers || document.getElementById && !document.all) {
if (e.which == 2 || e.which == 3) {
return false;
}
}
}

function OnDeny() {
if (event.ctrlKey || event.keyCode == 78 && event.ctrlKey || event.altKey || event.altKey && event.keyCode == 115) {
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}
}

if (document.layers) {
document.captureEvents(Event.MOUSEDOWN);
document.onmousedown = clickNS4;
document.onkeydown = OnDeny();
} else if (document.all && !document.getElementById) {
document.onmousedown = clickIE4;
document.onkeydown = OnDeny();
}

document.oncontextmenu = new Function("return false");
</script>