gistfile1.txt

      var popup = new L.popup({offset: new L.Point(0, -30)}, marker)
          .setContent(o.tooltipContents());

      marker.on('mouseover', function () {
        marker.setZIndexOffset(1000);
        clearTimeout(this.hideTimeout);
        
        this.showTimeout = setTimeout(function () {
          popup.setLatLng(marker.getLatLng())

          Map.$map.addLayer(popup);
        }, 200);
      });
      
      marker.on('mouseout', function () {
        marker.setZIndexOffset(-1000);
        
        clearTimeout(this.showTimeout);
        
        this.hideTimeout = setTimeout(function () {
          Map.$map.removeLayer(popup);
        }, 500);
      });