谷歌地图api v3多段线没有显示在visualbasic网页浏览器控件中

谷歌地图v2中的多段线在visual basic web浏览器中运行良好。现在谷歌地图v3返回一个错误"无法设置未定义或null引用的属性'lat'"。该应用程序以visual basic程序中的Javascript html文件的形式运行。当我直接在Internet Explorer中执行脚本时，多段线工作得很好。

有人知道可能是什么问题吗？

这是我的HTML代码：

<!DOCTYPE html>
<html>
  <head>
    <title>Simple Map</title>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <style>
      html, body, #map-canvas {
        height: 100%;
        margin: 0px;
        padding: 0px
      }
    </style>
    <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&key=AIzaSyDGYPgYpwZ4ZQCLCAujetDwArlVBC_S9TI&sensor=false"></script>
    <script>
var map;
function initialize() {
  var mapOptions = {
    zoom: 4,
    center: new google.maps.LatLng(36.70245,-95.7185)
  };
  map = new google.maps.Map(document.getElementById('map-canvas'),
      mapOptions);

 //<!var image = 'http://google.com/mapfiles/ms/micons/wht-circle.png';  
  var image = 'http://google.com/mapfiles/kml/paddle/wht-circle.png';
  var DC = new google.maps.Marker({
      position: new google.maps.LatLng(36.70245,-95.7185),
      map: map,
      icon: image
  });
  var image = "http://labs.google.com/ridefinder/images/mm_20_gray.png";
  var Customer = new google.maps.Marker({
      position: new google.maps.LatLng(31.291982, -95.821856),
      map: map,
      icon: image
  });
 var Customer = new google.maps.Marker({
      position: new google.maps.LatLng(41.291982, -105.821856),
      map: map,
      icon: image
  });
  var polyline = [
    new google.maps.LatLng(36.70245,-95.7185),
    new google.maps.LatLng(31.291982, -95.821856),
  ];
  var polyline_overlay = new google.maps.Polyline({
    path: polyline,
    strokeColor: '#FF0000',
    strokeOpacity: 1.0,
    strokeWeight: 2
  });
  polyline_overlay.setMap(map);
  var polyline = [
    new google.maps.LatLng(36.70245,-95.7185),
    new google.maps.LatLng(41.291982, -105.821856),
  ];
  var polyline_overlay = new google.maps.Polyline({
    path: polyline,
    strokeColor: '#FF0000',
    strokeOpacity: 1.0,
    strokeWeight: 2
  });
  polyline_overlay.setMap(map);
}
google.maps.event.addDomListener(window, 'load', initialize);
    </script>
  </head>
  <body>
    <div id="map-canvas"></div>
  </body>
</html>

对于初学者，可以删除最后一个坐标后的逗号：var折线=[新google.maps.LatLng（36.70245，-95.7185），新google.maps.LatLng（41.291982，-105.821856），]；

应为：var折线=[新google.maps.LatLng（36.70245，-95.7185），new google.maps.LatLng（41.291982，-105.821856）//在此处删除逗号]；

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