I just clicked an irc:// link and typed in the irc:// url in the firefox address browser ... pretty much all there was too it.
It even does the same in a fresh copy of mIRC.
Image located here.*edit*
When connecting to a new server it displays the current connection as the server I wish to connect too.
I phrased that badly.
I ment to say "It displays the server I wish to connect too as the current connection."