type load
$( map selector ).geomap( {
  loadstart: function( e, geo ) { }
} );
$( map selector ).bind( "geomaploadstart", function( e, geo ) { } );
} );

The loadstart event triggers when the geomap widget begins to load new images. It only triggers once regardless of the number of images about to be loaded. It will not be triggered again until after all pending images have been loaded (the image queue returns to zero) and a change in the map requires more images.

The geo argument is currently undefined for this event.

You can use this event to show an indicator that your website is busy downloading images.