title: How can I Open Multiple Popups in Leaflet Marker at a time
body: <p>Map` like this:</p>
  
  <pre><code>L.Map = L.Map.extend({
  openPopup: function(popup) {
  this._popup = popup;
          return this.addLayer(popup).fire('popupopen', {
              popup: this._popup
          });
      }
  });
  </code></pre>
  
  <p>But I am using leaflet. Is there anyway to extent like so that i can prevent closing my marker popup?</p>
  
  <pre><code>L.mapbox.accessToken = constant.accessToken;
  var map = L.mapbox.map('map', 'mapbox.streets', {zoomControl: true});
  </code></pre>