[stunnel-users] URL changes in browser to http from https

I am just starting to experiment with stunnel on Debian Linux, using the standard debian packages. I've got it working so far accepting requests on the local port 443 and connecting on 80, but when the page loads the URL changes back to a non-secure address.

To illustrate:

https://192.168.1.10 loads a simple static web page and you get the normal warning for the certificate, but after the page loads the URL changes to http://192/168.1.10 . I thought this might just be IE or something but Firefox does it too. Could I be missing a setting in stunnel?

Any ideas?

Thank you, Casey