Reference marker by ID
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I have a set of markers on my map and am trying to update their position form an ajax call...
The ajax call works fine and I can loop through the new values; however I cannot find a way to reference the markers (say by ID) so I can update their latLng.

Basically in the end I will need to..
1.) Obtain a reference to a marker by a unique id
2.) Possibly loop through all markers

Thanks in advance - I am new and need a little help getting going - hopefully I can pass along the good will when I can :)
