Using Mibbit as your IRC Client in Firefox 3
Do you know Mibbit? It's an awesome web based IRC client. 
IRC, for those not old enough to recall, meant chat long before instant messaging entered the scene and is still a very reliable option for group and peer-to-peer text communication.
You can take advantage of Firefox 3's support for web-based protocol handling to make it your default IRC client and have Mibbit handle irc:// links whenever you find such a link and wish to connect.
Mibbit added the necessary interface shortly before the Firefox 3 final release and it may yet be added to future releases of Firefox as the default IRC client.
To use it now, you simply follow these steps:
First, you will have to enable registration of protocol web handlers from different domains.
- Enter about:config_ in the location bar and press Enter to access the advanced preferences.
- Look for gecko.handlerService.allowRegisterFromDifferentHost and double click it to set it to true.
Add Mibbit as an IRC handler
Now copy the code below into your browser location bar to add Mibbit as an irc: links handler.
javascript:navigator.registerProtocolHandler('irc','https://www.mibbit.com/?url=%s','Mibbit');
You will be prompted with a confirmation info bar. Press Add Application.
You can now select Mibbit as your irc:// links handler from the Application page in the Options dialog.
Now when you click on
irc:// links a new tab with Mibbit and a tab connected to the IRC server and channel will open.
I suggest setting
gecko.handlerService.allowRegisterFromDifferentHost back to false to prevent malicious web sites offering their own protocol handlers.
In case you need to remove Mibbit as an
irc: _handler, go back to the Applications page in the Options dialog.
Look for irc in the content type column. Open the menu in the
Action column and select
Application Details..., select Mibbit and press
Remove.
Note: If you have the Chatzilla extension installed and enabled, for this to work properly, you need to go into about:config, right click "New --> Boolean", create a new setting called "Setting "network.protocol-handler.external.irc" and set it's value to "true". Remember, when putting the values in, remove the double quotes.
Derived from Mozilla Links: http://mozillalinks.org/wp/2008/07/set-mibbit-as-your-irc-client-in-firefox/
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