Well, I made a copy of this page and saved it to my hard disk. My last attempt does work provided that the one before is deleted.

There is a problem though as attempting to use the popup.html on my site causes an access denied error and even though the window does open, the channels are not set correctly and other paramaters are ignored. So it appears that the only way to get this experiment to work would involve placing a copy of my version (or a compatible one - there is a Mudcat one somewhere that we have used for Hearme sessions but that does not contain the code required to change the paramaters I change) popup.html in www.mudcat.org/

Jon