[Google-Desktop-Developer] A window other than the Options window?

I'm working on another javascript plugin and I want to verify the
absence of a feature before I change the design to work around this.
Ideally, I'd like to have a couple of menu items that pop up different
options dialogs with different controls, but I don't see a way to get
or create a window object other than through the
PluginHelper.onShowOptionsDlg method. I've looked through the
documentation, but I can't seem to find a way to pop up an options
window other than through the options dialog. Has anyone else done
this?