As of Google Maps API v3.6, maps now include \"points of interest\", which are gray markers embedded into a map. When the user clicks on this icon, an InfoWindow appears wi
I'm not sure this is not a violation of the Google Maps TOS, it's a bit hacky, and doesn't work on IE < 9, but you can listen on dom event, to detect the creation of the window, using Mutation Observer
Here is a plunkr to demonstrate : http://plnkr.co/edit/pGep9OZFligLhRtHlhgk You can check in the console, an event is fired (actually twice) when you click on a POI, and the window is hidden