// Get data

var url = 'http://wafi.iit.cnr.it/openervm/api/getPlacesByArea?S=42.666&N=42.912&W=10&E=10.5';

$.getJSON(url, function(data) {
    
  // Visualize

  var center = new google.maps.LatLng(42.779152, 10.277379);
  var myOptions = {
    zoom: 11,
    center: center
  };
  var map = new google.maps.Map(document.getElementById("mapcanvas"), myOptions);
  
  for(var i in data) { // noprotect
    new google.maps.Marker({
      position: new google.maps.LatLng(data[i].lat, data[i].lng), 
      map: map, 
      title: data[i].name,
      icon: "http://wafi.iit.cnr.it/webvis/examples/opener_places/"+data[i].category+".png"
    });
  }
});