<html>
<head>
<title>Select Text Example</title>
<script type="text/javascript">
function selectText() {
var oTextbox1 = document.getElementById("txt1");
oTextbox1.focus();
oTextbox1.select();
}
</script>
</head>
<body>
<input type="text" size="12" id="txt1" value="initial value" /><br />
<input type="button" value="Select Text" onclick="selectText()" />
</body>
</html>