​x
 
<html>
<body id="myid" lang="en-us">
​
<script type="text/javascript">
x=document.getElementsByTagName('body')[0];
document.write("Body language: " + x.lang);
document.write("<br />");
document.write("An alternate way: ");
document.write(document.getElementById('myid').lang);
</script>
​
</body>
</html>
​