title: Google Maps - Multiple instances of same marker due to zoom
body: <p>Hi I have a scenario where say I have a marker at a given location if the user zooms out so that the country the marker is on is shown twice, you see the marker twice.</p>
  
  <p>I was wondering if it is possible to remove one instance of that marker so that only one version of it is displayed at a time.</p>
  
  <p>At present it then breaks an overlay hover behaviour because the maps api can't determine where to place the overlay as there are 2 instances of the same marker on the screen at a given point in time.</p>
  
  <p>Thanks</p>