title: Add user location marker to existing gmap
body: <p>I am using Drupal 7 - Location, GMap module. I have a view that renders the result in a gmap. Everything works fine here and I get all the markers. Now I need a Find My location button which shows the users current location and adds a marker to the existing map.
  Google Map Api V3 always works on a newly created map and I couldn't find a function which returns an existing map in the current page.</p>
  
  <p>Gmap module provides a JS function - Drupal.gmap.getMap('ur-map-id') which is supposed to return a pointer to the map whose id is given. But this did not work.</p>
  
  <p>Could someone please guide me as to how I should go about this? Can I get it work with Google Maps API? I need to retain the original map with all its markers.</p>