Google maps jQuery plugin load markers with microdata example

<script src="http://maps.google.com/maps/api/js?sensor=true" type="text/javascript"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js" type="text/javascript"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.9/jquery-ui.min.js" type="text/javascript"></script>
<script src="PATH_TO_PLUGIN/jquery.ui.map.js" type="text/javascript"></script>

<script type="text/javascript">
	$(function() {
		$('#map_canvas').gmap({ 'center': new google.maps.LatLng(39.2083424, -76.53943019999997), 'navigationControl': false, 'streetViewControl': false, 'callback': function () {
                $('#map_canvas').gmap('loadMetadata', 'microdata', 'http://data-vocabulary.org/Event', function(i, item, result) {
                    var latlng = new google.maps.LatLng(result.properties.location[0].properties.geo[0].properties.latitude[0], result.properties.location[0].properties.geo[0].properties.longitude[0]);
                    $('#map_canvas').gmap('addMarker', { 'bounds':true, 'position': latlng, 'animation': google.maps.Animation.DROP }, function(map, marker){
                        var content = '<div class="iw"><img class="iw-photo shadow-all" src="'+result.properties.photo[0]+'"/><h1 class="iw-summary">'+result.properties.summary[0]+'</h1><p class="iw-description">'+result.properties.description[0]+'</p><div class="clear"><div></div>';
                        var iw = $('#map_canvas').gmap('addInfoWindow', { 'position':marker.getPosition(), 'content': content }, function(iw) {
                            $(marker).click(function() {
                                iw.open(map, marker);
                                map.panTo(marker.getPosition());
                            });																												  
                        });
                        $(item).addClass('clickable');
                        $(item).click(function() {
                            $(marker).triggerEvent('click');
                            return false;
                        });
                    });																	 
                });
            }
        });
	});
</script>