[xml] Determing element namespace prefix

["Akarsha Kumar" <akikumar gmail com>]

Hi,

Is there a straightforward way to determine if an element has a namespace prefix? For the following element:

<myns:Elem> some data </myns:Elem>

I would like to obtain the string "myns:Elem". 
xmlNode.name simply returns "Elem" and I can't find an obvious way to get to the "myns" part as well.

Thanks,
Aki