[Companion] How do I suppress toolbar in popup windows?

[Goformusic Support]

Hello,

I'm new to this list and new in creating FireFox extensions. I've
build a working extension, but the toolbar I created is also visible
in popup windows. I've read that Brian Kennelly from the Yahoo
Companion had the same problem, but can't find his solution.

So, how do I suppress a toolbar in popup windows? Have been googling
around without any results...

This is the xul I use (shortened):

<overlay id="converterOverlay"
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<toolbox id="navigator-toolbox">
<toolbar id="findfile_toolbar" align="center" toolbarname="Weblink">
</toolbar>
</toolbox>
</overlay>

Thnx,

Barton