Remote RDF datasource and http authentication

Hi all,

In my chrome application, I use a remote rdf file to populate a tree widget. 

<tree datasources="http://localhost/data.rdf" ref="urn:root">
...
</tree>

This works fine if the http server does not require authentication.

If I setup the server to request basic http authentication, the data is
simply not loaded, where I would expect mozilla to open the popup login
box.

I found that if I setup the login/password within the url
(http://login:password@localhost/data.rdf), it works but the
login/password is not synchronized with the one used internally by mozilla
to access regular html files.

Does anyone have a workaround for this ?

Thanks,
/mig