title: Google Map API V3: How to add Custom data to markers
body: <p>Is there a way I can add some custom information to my markers for later use. There are ways to have an info-window and a title, but what If I want to associate the marker with other information.</p>
  
  <p>I have other stuff being displayed on the page that depends on the markers so when a marker is click the content on the page has to change depending upon which marker was clicked.I would like store and retrieve the custom data  once a marker is lets say clicked etc.</p>
  
  <p>Thanks</p>