(function(){
    
    'use strict'
    
    var map = L.map('map').setView([24.8, -96], 5);
    var HERE_app_id = 'zTzEnl1eyyzi3TqSmlsa';
    var HERE_app_code = '1fczZYwHACkvMg5tnbuN4g';
    var HERE_hybridDayMobile = L.tileLayer('//{s}.{base}.maps.cit.api.here.com/maptile/2.1/maptile/{mapID}/hybrid.day/{z}/{x}/{y}/256/png8?app_id={app_id}&app_code={app_code}', {
        attribution: 'Map &copy; 1987-2014 <a href="http://developer.here.com">HERE</a>',
        subdomains: '1234',
        mapID: 'newest',
        app_id: HERE_app_id,
        app_code: HERE_app_code,
        base: 'aerial',
        minZoom: 0,
        maxZoom: 20
    }).addTo(map);
    
    L.TopoJSON = L.GeoJSON.extend({  
        addData: function(jsonData) {    
            if (jsonData.type === "Topology") {
                for (var key in jsonData.objects) {
                    var geojson = topojson.feature(jsonData, jsonData.objects[key]);
                    L.GeoJSON.prototype.addData.call(this, geojson);
                }
            }    
            else {
                L.GeoJSON.prototype.addData.call(this, jsonData);
            }
        }  
    });
    // Copyright (c) 2013 Ryan Clark
    
    var topoLayer = new L.TopoJSON();
    
    //d3.json('ageb0.json', function(topoData) {
    //    addTopoData(topoData);
    //})
    function request(url, callback) {
      var req = new XMLHttpRequest;
      req.open("GET", url, true);
      req.setRequestHeader("Accept", "application/json");
      req.onreadystatechange = function() {
        if (req.readyState === 4) {
          if (req.status < 300) callback(null, JSON.parse(req.responseText));
          else callback(req.status);
        }
      };
      req.send(null);
    }

    request('ageb0.json', addTopoData)
    

    function addTopoData(error, topoData){  
        topoLayer.addData(topoData);
        topoLayer.addTo(map);
        topoLayer.eachLayer(styleLayer);
    }

    function styleLayer(layer){  
        layer.setStyle({
            fillColor : '#7f0000',
            fillOpacity: .3,
            color:'#111',
            weight:1,
            opacity:1
        });

    }


}());