BingMapsExample.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
   <head>
      <title></title>
      <meta http-equiv="Content-Type" content="text/html; charset=utf-8">

      <script type="text/javascript" src="http://ecn.dev.virtualearth.net/mapcontrol/mapcontrol.ashx?v=7.0"></script>

      <script type="text/javascript">

         var map = null;
         function GetMap() {
            // Initialize the map
            map = new Microsoft.Maps.Map(document.getElementById("mapDiv"),{credentials:"Your Bing Map Credentials"}); 

            var loc1 = new Microsoft.Maps.Location(33.719753, -117.98925);
            var loc2 = new Microsoft.Maps.Location(33.993065, -117.918015);
            var loc3 = new Microsoft.Maps.Location(34.13095, -118.25497);

            // Add a pin to the map
            var pin1 = new Microsoft.Maps.Pushpin(loc1); 
            var pin2 = new Microsoft.Maps.Pushpin(loc2); 
            var pin3 = new Microsoft.Maps.Pushpin(loc3); 

            // Create a polyline
            var locations = new Array(loc1, loc2, loc3);
            var line = new Microsoft.Maps.Polyline(locations);

            map.setView({center:loc2, zoom: 9} );

            map.entities.push(line);
            map.entities.push(pin1);
            map.entities.push(pin2);
            map.entities.push(pin3);

         }
      </script>
   </head>
   <body onload="GetMap();">
      <div id='mapDiv' style="position:relative; width:400px; height:400px;"></div>
   </body>
</html>