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<!DOCTYPE html>
<html>
<head>
<script>
function init()
{
document.getElementById("t1").focus();
document.getElementById("t1").setSelectionRange(0, 1);
}
</script>
</head>
<body onload="init()">
<div>
<input type="text" id=t1 value="ABCD" readonly>
</div>
</body>
</html>