Add-on AJAX / Auto-load notifications counters (conversations - notifications) without page refresh?

[Scandal]

Is there any addon to do it?
I mean, when you have stop to refresh page via your browser, an ajax call will be made to detect if new notifications are available, and then change the red counter on the header.

I could develope it, but just asking if there is something ready cause didn't found something.

 

[gouwepeer.nl]

Live Content

Polls the server for new content, and adds them to the existing list of posts/messages. Updates alert & conversation totals along the way. This add-on tries to only use a single poller across multiple tabs for the same thread/conversation, and a...

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