title: How to manage markers and variables in leaflet
body: <p>I'm trying out the leafletjs.com library which i think is very nice for mobile application, but i'm in doubt how to approach it.</p>
  
  <p>I'm trying to make a realtime map where markers represents the position of each logged on user.
  If the user moves, the users marker should move accordingly.</p>
  
  <p>I'm a bit in doubt, how to do this in leaflet. My problem is simply how to make a lot of markers the right way, so i can later pick and move them.</p>
  
  <p>First i need to add each marker to a layergroup, and add that layergroup to the map, right?</p>
  
  <p>But later, how do i programmicaly pick one specific marker and update its position?</p>
  
  <p>Do i need to use any plugins or is leaflet in it self all i need?</p>
  
  <p>Thomas</p>