We have a Wordpress plugin that adds a chat to a page http://bit.ly/18Sgk9t.
We have also a floating version of the chat (a footer jumping icon).
Our job: Add a check-box that once checked will make the option of floating chat possible.
the difference between a normal chat and a floating chat is simply adding the text "&1" at the end of a string.
* Note, it should be backward compatible.