XML parser in Unity JS

Hi,
I am new to unity and my first task is to write a script that fetches XMLs and JSONs from server and parse them. My script is going to run on iphone so i need JS based parser. i need your suggestions about the best unity js based XML parser. I have found http://www.roguishness.com/unity/
Is it bug free and can handle any type of XML?? if not then is there any other ??

Thnx

There are a few XML parser examples on the unity community wiki, and quite a few threads on the subject.