title: Browser Back-Button jump to last location (like maps.google.com)
body: <p>What I do is I go to a location in Google Maps (either by searching or just by dragging the map). Now I enter another URL in the addressbar and hit return to go to that site.</p>
  
  <p>When I use the browser Back-Button, google Maps automatically switches back to the location I was last in.</p>
  
  <p>How is this done if I dragged the map and didn't use some kind of "POST" on the Google Maps site? I would like to have the same behaviour in my own google Google Maps App.</p>
  
  <p>I'm using Google Maps API for JavaScript v3</p>