Google maps 画折线

// This example creates a 2-pixel-wide red polyline showing// the path of William Kingsford Smith's first trans-Pacific flight between// Oakland, CA, and Brisbane, Australia.function initialize() {  var mapOptions = {    zoom: 3,    center: new google.maps.LatLng(0, -180),    mapTypeId: google.maps.MapTypeId.TERRAIN  };  var map = new google.maps.Map(document.getElementById('map-canvas'),      mapOptions);  var flightPlanCoordinates = [    new google.maps.LatLng(37.772323, -122.214897),    new google.maps.LatLng(21.291982, -157.821856),    new google.maps.LatLng(-18.142599, 178.431),    new google.maps.LatLng(-27.46758, 153.027892)  ];  var flightPath = new google.maps.Polyline({    path: flightPlanCoordinates,    geodesic: true,    strokeColor: '#FF0000',    strokeOpacity: 1.0,    strokeWeight: 2  });  flightPath.setMap(map);}google.maps.event.addDomListener(window, 'load', initialize);