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<!DOCTYPE html>
<html>
<head>
<script>
function doIt() {
var insertions = [
[ "opt1", "Shouldn't see me" ],
[ "opt2", "Or me" ],
[ "opt3", "I should hide too" ],
[ "opt4", "And me too" ]
];
for (var i = 0; i < insertions.length; ++i) {
var next = document.getElementById(insertions[i][0]);
next.parentNode.insertBefore(document.createTextNode(insertions[i][1]),
next);
}
document.getElementById("sel").appendChild(document.createTextNode("And I"));
}
</script>
</head>
<body onload="doIt()">
<select size="10" id="sel">
<option id="opt1">one</option>
<option id="opt2">two</option>
<optgroup>
<option id="opt3">three</option>
<option id="opt4">four</option>
</optgroup>
</select>
</body>
</html>
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