JavaScript DHTML/Javascript Objects/namespace
"namespace" Example
<html xmlns:namespace1 xmlns:namespace2>
<button onclick="alert(document.namespaces(0).name);">
Name of first namespace on the page
</button>
</body>
</html>
<html xmlns:namespace1 xmlns:namespace2>
<button onclick="alert(document.namespaces(0).name);">
Name of first namespace on the page
</button>
</body>
</html>