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<html>
<head>
<title>OnError Example</title>
<script type="text/javascript">
alert("Syntax error.";
window.onerror = function (sMessage, sUrl, sLine) {
alert("An error occurred:\n" + sMessage + "\nURL: " + sUrl + "\nLine Number: " + sLine);
return true;
}
</script>
</head>
<body onload="nonExistentFunction()">
</body>
</html>
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