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!
            
              .p {
  font-family: Arial, sans-serif;
  text-align: center;
}

.map svg {
  height: auto;
  width: 550px;
  margin: 0 auto;
  display: block;
}

.map g {
  fill: #ccc;
  stroke: #333;
  stroke-width: 1;
}

.map g:hover {
  fill: #fc0 !important;
  cursor: help;
}

.info_panel {
  background-color: rgba(255,255,255, .8);
  padding: 5px;
  font-size: 12px;
  font-family: Helvetica, Arial, sans-serif;
  position: absolute;
  border: 1px solid #333;
  color: #333;
  white-space: nowrap;
}

.info_panel::first-line {
  font-weight: bold;
}
            
          
!
            
              var regions=[
    {
        "region_name": "Lombardia",
        "region_code": "lom",
        "population": 9794525
    },
    {
        "region_name": "Campania",
        "region_code": "cam",
        "population": 5769750
    },
    {
        "region_name": "Lazio",
        "region_code": "laz",
        "population": 5557276
    },
    {
        "region_name": "Sicilia",
        "region_code": "sic",
        "population": 4999932
    },
    {
        "region_name": "Veneto",
        "region_code": "ven",
        "population": 4881756
    },
    {
        "region_name": "Emilia-Romagna",
        "region_code": "emi",
        "population": 4377487
    },
    {
        "region_name": "Piemonte",
        "region_code": "pie",
        "population": 4374052
    },
    {
        "region_name": "Puglia",
        "region_code": "pug",
        "population": 4050803
    },
    {
        "region_name": "Toscana",
        "region_code": "tos",
        "population": 3692828
    },
    {
        "region_name": "Calabria",
        "region_code": "cal",
        "population": 1958238
    },
    {
        "region_name": "Sardegna",
        "region_code": "sar",
        "population": 1640379
    },
    {
        "region_name": "Liguria",
        "region_code": "lig",
        "population": 1565127
    },
    {
        "region_name": "Marche",
        "region_code": "mar",
        "population": 1545155
    },
    {
        "region_name": "Abruzzo",
        "region_code": "abr",
        "population": 1312507
    },
    {
        "region_name": "Friuli-Venezia Giulia",
        "region_code": "fri",
        "population": 1221860
    },
    {
        "region_name": "Trentino-Alto Adige",
        "region_code": "tre",
        "population": 1039934
    },
    {
        "region_name": "Umbria",
        "region_code": "umb",
        "population": 886239
    },
    {
        "region_name": "Basilicata",
        "region_code": "bas",
        "population": 576194
    },
    {
        "region_name": "Molise",
        "region_code": "mol",
        "population": 313341
    },
    {
        "region_name": "Val d'Aosta",
        "region_code": "vao",
        "population": 127844
    }
];


var temp_array= regions.map(function(item){
    return item.population;
});
var highest_value = Math.max.apply(Math, temp_array);

$(function() {

    for(i = 0; i < regions.length; i++) {

        $('#'+ regions[i].region_code)
        .css({'fill': 'rgba(11, 104, 170,' + regions[i].population/highest_value +')'})
        .data('region', regions[i]);
    }

    $('.map g').mouseover(function (e) {
        var region_data=$(this).data('region');
        $('<div class="info_panel">'+
            region_data.region_name + '<br>' +
          	'Population: ' + region_data.population.toLocaleString("en-UK") +
          	'</div>'
         )
        .appendTo('body');
    })
    .mouseleave(function () {
        $('.info_panel').remove();
    })
    .mousemove(function(e) {
        var mouseX = e.pageX, //X coordinates of mouse
            mouseY = e.pageY; //Y coordinates of mouse

        $('.info_panel').css({
            top: mouseY-50,
            left: mouseX - ($('.info_panel').width()/2)
        });
    });

});
            
          
!
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