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List all elements by reference the document.all



<html>
<head>
<title>A Simple Page</title>
<script language="JavaScript">
<!--
function findhead1()
{
    var tag, tags;
    tags = "The tags in the page are:"
    for(i = 0; i < document.all.length; i++)
    {
        tag = document.all(i).tagName;
        tags = tags + "r" + tag;
    }
    document.write(tags);
}

//  -->
</script>
</head>
<body onload="findhead1()">
<h1>Heading One</h1>
</body>
</html>