sharing RDF datasource between iframes or through reload

Hi,

I have a problem using RDF through an application made with different 
iframe. Basically, the best-fit datasource type for our data is the 
in-memory-datasource style. But iframes reloads their javascript, so the 
in-mem statement for declaring the javascript variable holding the RDF 
datasource catches a new RDF in-mem Datasource (an hole new one, so it 
is empty) each time we switch iframes... This forbids us to share the 
datasource between iframes...

When developping another application, I've come along with strange RDF 
Datasource problems that involved strange artifact stored in my RDF 
datasources and that could not be removed by a simple reload of the 
script. They disappeared only after a complete shutdown of firefox, and 
reload.

This leads me to think that there's a way to store in-mem informations 
that could be transmitted through reload or iframes... Have you some 
hints to share ?

Thx in advance.

Valentin LAB