<!DOCTYPE html>
<html>
<head>
<script src="/statics/demosource/loadxmldoc.js">
</script>
</head>
<body>
<script>
xmlDoc=loadXMLDoc("/statics/demosource/books.xml");
x=xmlDoc.getElementsByTagName('book');
x[0].setAttribute("category","food");
document.write(x[0].getAttribute("category"));
</script>
</body>
</html>
