working imap js example

<script type='text/javascript' src='https://www.gstatic.com/charts/loader.js'></script>
<script type='text/javascript' src='https://www.google.com/jsapi'></script>
<script type='text/javascript'>google.charts.load('42', {'packages':['geochart']});
google.charts.setOnLoadCallback(drawVisualization);

  function drawVisualization() {var data = new google.visualization.DataTable();

 data.addColumn('string', 'Country');
 data.addColumn('number', 'Value');
 data.addColumn({type:'string', role:'tooltip', p:{html:true}});var ivalue = new Array();

 data.addRows([[{v:'US',f:'United States'},0,'Click to open new page']]);
 ivalue['US'] = 'http://www.facebook.com';

 var options = {
 backgroundColor: {fill:'#FFFFFF',stroke:'#CCCCCC' ,strokeWidth:0 },
 colorAxis:  {minValue: 0, maxValue: 0,  colors: ['#6699CC']},
 legend: 'none',
 datalessRegionColor: '#EAF5E6',
 displayMode: 'regions',
 enableRegionInteractivity: 'true',
 resolution: 'countries',
 sizeAxis: {minValue: 1, maxValue:1,minSize:8,  maxSize: 8},
 region:'world',
 keepAspectRatio: true,
 width:null,
 height:null,
 tooltip: {textStyle: {color: '#444444'}, trigger:'focus', isHtml: true}
 };
  var chart = new google.visualization.GeoChart(document.getElementById('map_1533308369228'));
  google.visualization.events.addListener(chart, 'select', function() {
  var selection = chart.getSelection();
  if (selection.length == 1) {
  var selectedRow = selection[0].row;
  var selectedRegion = data.getValue(selectedRow, 0);
  if(ivalue[selectedRegion] != '') { window.open(ivalue[selectedRegion]);  }
  }
  });
 chart.draw(data, options);
 }
 window.onresize = function(event) {
     drawVisualization();
 };
 </script>
 <div id='map_1533308369228'></div>