if($('#bss-googlemap').css('display') == 'none') {
   jQuery(this).next(".bss-googlemap-class").slideDown(500,function(){
      var center = map.getCenter();
      google.maps.event.trigger(map, "resize");
      map.setCenter(center);
   });
} else {
  jQuery(this).next(".bss-googlemap-class").slideUp(500);
}