the id of the tooltip layer. you may change this if needed. for example if you want to use 2 different (looking) tooltips on the same page. but normally there's no need.
we return false if the query has been done because you can use that value in your code to return it too. then other events won't fire because of the return false. you may not understand this if you're not a web crack, just accept that it works like that.
Tags:
return:
(false if query has been done, true if not. see above.)