Tcl browser plugin v3 (from ActiveState)

There are some discrepancies in info about embedding Tcl/Tk since the change to plugin v3.

I tested against up-to-date Chrome, Opera, Safari, IE8, FireFox 3.5 and Amaya

My result is that given some script XYZ.tcl ONLY the following worked across all:

<OBJECT
ID="PluginHostCtrl"
CLASSID="CLSID:14E78123-A693-4F27-B6EE-DDDE18F93D3A"
WIDTH="400"
HEIGHT="220"
>
<PARAM name="type" value="application/x-tcl"/>
<PARAM name="pluginspage" value="http://www.tcl.tk/software/plugin/"/>
<PARAM name="src" value="XYZ.tcl"/>
</OBJECT>

Getting the plugin recognized by each browser was slightly problematic: IE 8 appeared to just ignore the XPI.