Location map clustering

<!--- START --->
<!---
1. go to your theme header.php (or create a separate javascript file and include it)

2. paste the snippet below your header.php wp_head() code

3. you can now use EM shortcode [locations_map]
--->
<!---  END  --->

<script src="http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/src/markerclusterer.js"></script>
<script>

	jQuery(document).bind('em_maps_locations_hook', function( e, maps, data ){

		 var markers = [];

		for (var i = 0; i < data.length; i++) {
			 if( !(data[i].location_latitude == 0 && data[i].location_longitude == 0) ){
				var latitude = parseFloat( data[i].location_latitude );
				var longitude = parseFloat( data[i].location_longitude );
				var latLng = new google.maps.LatLng(latitude, longitude);
				var marker = new google.maps.Marker({'position': latLng});
				markers.push(marker);
			}
		}

		var markerCluster = new MarkerClusterer(maps, markers);

	});

</script>