+1  A: 

Currently there are no options to shorten the infoWindow tail.

You are correct that pixelOffset is not what you are looking for. It is the equivalent of setting the infoWindowAnchor offset resulting in the same length tail, but pointing at a point offset (presumably downscreen) from your icon. So you can move the window using this approach (as long as you use map.openInfoWindowHtml, not supported in marker.openInfoWindowHtml), but the tail pointing to something below your icon looks pretty average.

I hope I have missed something here and someone can correct me.

Alternatively, it would be great if this feature was implemented. I feel like pixelOffset should do this, as you can already offset the infoWindowAnchor when you create the icon.

Cannonade
Thanks for your answer. However I am still not quite convinced that it's not possible. When I take a look at the View "Page Info >> Media" and at the individual images downloaded from Google, there seems to be a "short tail" AND its short shadow as well... confusing.
Peter Perháč
It does look like it should be supported. I wonder if it is just something that isn't exposed ?
Cannonade
A: 

I'm having the same problem. I'd like to display iPhone style GinfoWindow's but there does not seem to be an available option to do so in the openInfoWindowHTML function. Anybody solve this one?

Brooks
A: 

The short tail in that image is used for maximized infoWindow's. There isn't any way to use it for a regular infoWindow.

A good alternative would be to use a third-party infoWindow. See this post for a list of several options.

Chris B