title: HighMap displaying issue with customized json file
body: <p>I am trying to load json file with three variables into HighMap.</p>
  
  <p>In my revised JSON I included three columns:
  1. Code 2. Value 3. Median Wage</p>
  
  <p>I was able to load JSON file through main.js, but with Median Wage added, the map lost its gradient and I was not able to start a new line for Median Wage in the hover-over displaying box. </p>
  
  <p>The demo from HighCharts looks like this:
  <a href="http://jsfiddle.net/gh/get/jquery/1.9.1/highslide-software/highcharts.com/tree/master/samples/maps/demo/color-axis/" rel="nofollow">http://jsfiddle.net/gh/get/jquery/1.9.1/highslide-software/highcharts.com/tree/master/samples/maps/demo/color-axis/</a></p>
  
  <p>Any input will be much appreciated.</p>
  
  <p>Thank you!</p>
  
  <p><strong>HTM File</strong> </p>
  
  <pre><code>&lt;html&gt;
     &lt;head&gt;
        &lt;meta http-equiv="Content-Type" content="text/html; charset=utf-8"&gt;
        &lt;title&gt;Highmaps Example&lt;/title&gt;
  
        &lt;script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"&gt;&lt;/script&gt;
        &lt;style type="text/css"&gt;
  ${demo.css}
        &lt;/style&gt;
     &lt;/head&gt;
     &lt;body&gt;
  &lt;script src="js/main.js"&gt;&lt;/script&gt;
  &lt;script src="js/highmaps.js"&gt;&lt;/script&gt;
  &lt;script src="http://code.highcharts.com/mapdata/countries/us/us-all.js"&gt;&lt;/script&gt;
  &lt;script src="js/modules/data.js"&gt;&lt;/script&gt;
  
  
  
  
  &lt;div id="container" style="height: 500px; min-width: 310px; max-width: 600px; margin: 0 auto"&gt;&lt;/div&gt;
  
     &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p><strong>Main js</strong></p>
  
  <pre><code>function create_chart() {
      $.getJSON('data.json', function (data) {
          // Make codes uppercase to match the map data
          $.each(data, function () {
              this.Code = this.Code.toUpperCase();
          });
          console.log(data);
  
          // Instanciate the map
          $('#container').highcharts('Map', {
              chart : {
                  borderWidth : 1
              },
  
              title : {
                  text : 'US Density vs Median Wage'
              },
  
              legend: {
                  layout: 'horizontal',
                  borderWidth: 0,
                  backgroundColor: 'rgba(255,255,255,0.85)',
                  floating: true,
                  verticalAlign: 'top',
                  y: 25
              },
  
              mapNavigation: {
                  enabled: true
              },
  
              colorAxis: {
                  min: 1,
                  type: 'logarithmic',
                  minColor: '#eefff1',
                  maxColor: '#000022',
                  stops: [[0, '#effff5'],
                          [0.67, '#61ae0e'],
                          [1, '#000022']]
              },
  
              series : [{
                  animation: {
                      duration: 1000
                  },
                  data : data,
                  mapData: Highcharts.maps['countries/us/us-all'],
                  joinBy: ['postal-code','Code'],
                  dataLabels: {
                          enabled: true,
                          color: 'white',
                          format: '{point.Code}'
                      },
                  name: 'US Density vs Median Wage',
                  tooltip: {
                      pointFormat: '{point.Code}: {point.Value}% \n Median Wage: ${point.MedianW}'
                  }
              }]
          });
      });
  }
  $(document).ready(create_chart);
  </code></pre>
  
  <p><strong>json file</strong></p>
  
  <pre><code>[
    {
      "Code":"AL",
      "Value":11.8,
      "MedianW":40120
    },
    {
      "Code":"AK",
      "Value":24.5,
      "MedianW":53804
    },
    {
      "Code":"AZ",
      "Value":6,
      "MedianW":42107
    },
    {
      "Code":"AR",
      "Value":4.1,
      "MedianW":36505
    },
    {
      "Code":"CA",
      "Value":17.4,
      "MedianW":48415
    },
    {
      "Code":"CO",
      "Value":9.2,
      "MedianW":49549
    },
    {
      "Code":"CT",
      "Value":14.3,
      "MedianW":58337
    },
    {
      "Code":"DE",
      "Value":11,
      "MedianW":48284
    },
    {
      "Code":"DC",
      "Value":10.9,
      "MedianW":50186
    },
    {
      "Code":"FL",
      "Value":6.9,
      "MedianW":41915
    },
    {
      "Code":"GA",
      "Value":6.3,
      "MedianW":41214
    },
    {
      "Code":"HI",
      "Value":23.6,
      "MedianW":49919
    },
    {
      "Code":"ID",
      "Value":5.8,
      "MedianW":41785
    },
    {
      "Code":"IL",
      "Value":16.3,
      "MedianW":47485
    },
    {
      "Code":"IN",
      "Value":10.2,
      "MedianW":42089
    },
    {
      "Code":"IA",
      "Value":12,
      "MedianW":42207
    },
    {
      "Code":"KS",
      "Value":8.4,
      "MedianW":42577
    },
    {
      "Code":"KY",
      "Value":13,
      "MedianW":40020
    },
    {
      "Code":"LA",
      "Value":5.5,
      "MedianW":37967
    },
    {
      "Code":"ME",
      "Value":13.1,
      "MedianW":41488
    },
    {
      "Code":"MD",
      "Value":13.1,
      "MedianW":58269
    },
    {
      "Code":"MA",
      "Value":14.6,
      "MedianW":55602
    },
    {
      "Code":"MI",
      "Value":16.8,
      "MedianW":45029
    },
    {
      "Code":"MN",
      "Value":15,
      "MedianW":48097
    },
    {
      "Code":"MS",
      "Value":4.2,
      "MedianW":36240
    },
    {
      "Code":"MO",
      "Value":10.4,
      "MedianW":41092
    },
    {
      "Code":"MT",
      "Value":14.8,
      "MedianW":42301
    },
    {
      "Code":"NE",
      "Value":9,
      "MedianW":41861
    },
    {
      "Code":"NV",
      "Value":16.1,
      "MedianW":44924
    },
    {
      "Code":"NH",
      "Value":10.7,
      "MedianW":52588
    },
    {
      "Code":"NJ",
      "Value":16.6,
      "MedianW":61146
    },
    {
      "Code":"NM",
      "Value":7.4,
      "MedianW":38349
    },
    {
      "Code":"NY",
      "Value":25.8,
      "MedianW":47790
    },
    {
      "Code":"NC",
      "Value":4.7,
      "MedianW":40710
    },
    {
      "Code":"ND",
      "Value":8.5,
      "MedianW":41557
    },
    {
      "Code":"OH",
      "Value":14.1,
      "MedianW":42814
    },
    {
      "Code":"OK",
      "Value":9.5,
      "MedianW":40665
    },
    {
      "Code":"OR",
      "Value":14.9,
      "MedianW":43160
    },
    {
      "Code":"PA",
      "Value":13.7,
      "MedianW":47439
    },
    {
      "Code":"RI",
      "Value":17.8,
      "MedianW":46896
    },
    {
      "Code":"SC",
      "Value":4.6,
      "MedianW":39238
    },
    {
      "Code":"SD",
      "Value":5.8,
      "MedianW":38071
    },
    {
      "Code":"TN",
      "Value":7.4,
      "MedianW":39891
    },
    {
      "Code":"TX",
      "Value":6,
      "MedianW":41225
    },
    {
      "Code":"UT",
      "Value":5.4,
      "MedianW":50976
    },
    {
      "Code":"VT",
      "Value":13.2,
      "MedianW":46019
    },
    {
      "Code":"VA",
      "Value":6.4,
      "MedianW":53328
    },
    {
      "Code":"WA",
      "Value":19.7,
      "MedianW":52724
    },
    {
      "Code":"WV",
      "Value":13.6,
      "MedianW":41499
    },
    {
      "Code":"WI",
      "Value":13.1,
      "MedianW":43661
    },
    {
      "Code":"WY",
      "Value":6.4,
      "MedianW":45336
    }
  ]
  </code></pre>