The Tcl/Tk browser plugin isn't even in a state where I could even get it installed.
I think it would be an instructive exercise to get a portion of tkoutline running in the plugin as it would guide me towards smarter code organization. However, unless someone can help me obtain a plugin binary based off Tcl/Tk 8.3 or above that will work with mozilla on windows, then I probably won't pursue it.
22Nov02 - I encountered some instructions 2 by Scott Gamon on getting the plugin working with mozilla. Still only an 8.0 version of Tcl/Tk, but I might give it a try.
23Jan03 - Apparently Jeff Hobbs has modified the TclPlugin to work with Tcl 8.4. See this comp.lang.tcl thread 3.