Many web page authors use links starting with xmpp: for JIDs. Your web browser could be made to pass such links to jabber.el, so that such links are actually useful and not just decoration. How to do that depends on your operating system and web browser.
If you use a Mozilla-based web browser on a Unix-like operating system, follow these steps.
user_pref("network.protocol-handler.app.xmpp", "/path/to/xmppuri.sh");
Restart Mozilla for this change to take effect.
If you know how to pass an XMPP URI from your browser to the function
jabber-handle-uri, your contribution for this section would be
appreciated.