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how to lock some keys?

how to lock some keys with javascript??

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JavaScript

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@KorMar 12.2004 — I have not quite understand what do you mean by lock... Something like?:

[code=php]
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<script>
function capture(evt) {
var c = document.layers ? evt.which
: document.all ? event.keyCode
: evt.keyCode;
var s = String.fromCharCode(c)
lock(s);
}
function lock(wh){
if(wh == 'Q'){return false}
else{alert(wh)}
}
</script>
</head>

<body onkeypress="return capture(this)">
if pressing Q nothing happens, else an alert will shou you the pressed key
</body>
</html>
[/code]
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