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Test Info:

<!DOCTYPE html>
<html>
<head>
<script>
function runTest() {
var div = document.createElement("div");
div.appendChild(document.createTextNode("New Div"));
document.body.insertBefore(div, document.getElementById("insertion"));
}
</script>
</head>
<body onload="runTest()">
<div style="display: table-cell">Table cell</div>
<div id="insertion">Block</div>
</body>
</html>