jsLib inMemRDF

Hi,

I'm trying to create the following RDF file dynamically with jsLib 
inMemRDF (I know it can be made with a RDFFile call but I want to 
understand how inMemRDF works):


<RDF:Description about="http://localhost/genericStore/Book/12197">
<Book:Title>Book #9</Book:Title>
<Book:ISBN>907000733</Book:ISBN>
<Book:PublisherId>12197</Book:PublisherId>
<Book:AuthorId>12188</Book:AuthorId>
</RDF:Description>

<RDF:Bag about="http://localhost/genericStore/Book">
   <RDF:li resource="http://localhost/genericStore/Book/12197"/>
</RDF:Bag>

I've tried this but it doesn't work.  I don't understand how to insert 
the sub-nodes.

var datastore = new inMemRDF("http://localhost/genericStore/Book", 
"http://localhost/genericStore/Book#");

var newNode = datastore.addNode('12197');
datastore.setAttrRes(newNode, 'http://localhost/genericStore/Book/12197');
datastore.setAttrLit(newNode, 'Title', 'Book #9');
datastore.setAttrLit(newNode, 'ISBN', '907000733');

Thank you very much
Denis Laprise