lingr.js contains a full-featured Lingr API client in javascript.  You can 
use lingr.js to embed Lingr chatrooms in any web page- just provide the 
appropriate callbacks, bolt on your own UI, and you're done.

lingrtest.html demonstrates a simple usage of lingr.js, to provide a read-only  
chatroom in a web page, with realtime roster and message updating- just insert 
your API key and a valid room id in the indicated places.

For full details, see the documentation at http://wiki.lingr.com/dev/show/LingrJS.