On my site, I\'m using Google Maps API v3 to place house markers on the map.
The InfoWindows stay open unless you explicitly click the close icon. Meaning, you can h
From this link http://www.svennerberg.com/2009/09/google-maps-api-3-infowindows/:
Teo: The easiest way to do this is to just have one instance of the InfoWindow object that you reuse over and over again. That way when you click a new marker the infoWindow is “moved” from where it’s currently at, to point at the new marker.
Use its setContent method to load it with the correct content.