title: How to reference a google map marker by it's id and activate it's click event using javascript?
body: <p>I am dealing with Google Maps here and javascript.  I have an existing marker on my Google map and I can click on it and it displays a div.  If I click it again, the div disappears.  I gave this marker a specific, unique id.  </p>
  
  <p>There is also a Polygon on the map.  I want when the user clicks on the polygon that the click event is activate for a marker that I will reference by the marker's id.  </p>
  
  <p>Is this possible?  If so, let's say that the id of the marker is U123.  How would I do this?</p>
  
  <p>Here is the code I use to add an event to the polygon click:
      google.maps.event.addListener(assetPolygons[polygon_count],'click', function (event) {new google.maps.event.trigger('U123', 'click');}); </p>
  
  <p>U123 is the name of the marker id.  The above is not working.</p>