You can simply remove the zoom in and out google map by adding an overlay.

So you can solve this by putting a div with an .overlay exactly before each gmap iframe insertion, see:

<html>
  <div class="overlay" onClick="style.pointerEvents='none'"></div>
  <iframe src="https://mapsengine.google.com/map/embed?mid=some_map_id" width="640" height="480"></iframe>
</html>

In my CSS I created the class:

.overlay {
   background:transparent; 
   position:relative; 
   width:640px;
   height:480px; /* your iframe height */
   top:480px;  /* your iframe height */
   margin-top:-480px;  /* your iframe height */
}

The div will cover the map, preventing pointer events from getting to it. But if you click on the div, it becomes transparent to pointer events, activating the map again!

I hope get helped you 🙂

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