| Код |
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Документ без названия</title>
<script type="text/javascript">
function preventDigits(sender) {
sender.value = sender.value.replace(/\d/g, "");
}
</script>
</head>
<body>
<form action="#">
<input type="text" id="txt" onkeyup="preventDigits(this);" />
</form>
</body>
</html>
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