{{"""
this is an example of usage of google map
the web2py action should be something like:

def map():
    return dict(
      googlemap_key='...',
      center_latitude = 41.878,
      center_longitude = -87.629,
      scale = 7,
      maker = lambda point: A(row.id,_href='...')
      points = db(db.point).select() where a points have latitute and longitude
    )

the corresponding views/defaut/map.html should be something like:

    \{\{extend 'layout.html'\}\}
    <center>\{\{include 'generic.map'\}\}</center>

"""}}
  <script src="http://maps.google.com/maps?file=api&amp;v=2&amp;key={{=googlemap_key}}" type="text/javascript"></script>
    <script type="text/javascript">
    //<![CDATA[
    function load() {
      if (GBrowserIsCompatible()) {
        var map = new GMap2(document.getElementById("map"));
        map.addControl(new GSmallMapControl());
        map.addControl(new GMapTypeControl());
        map.setCenter(new GLatLng({{=center_latitude}},
           {{=center_longitude}}), {{=scale}});
        // Create a base icon for all of our markers that specifies the
        // shadow, icon dimensions, etc.
        var baseIcon = new GIcon();
        baseIcon.shadow = "http://www.google.com/mapfiles/shadow50.png";
        baseIcon.iconSize = new GSize(20, 34);
        baseIcon.shadowSize = new GSize(37, 34);
        baseIcon.iconAnchor = new GPoint(9, 34);
        baseIcon.infoWindowAnchor = new GPoint(9, 2);
        baseIcon.infoShadowAnchor = new GPoint(18, 14);
        var blueIcon = new GIcon();
        blueIcon.image = "http://www.google.com/intl/en_us/mapfiles/ms/micons/blue-dot.png";
        blueIcon.shadow = "http://www.google.com/mapfiles/shadow50.png";
        blueIcon.iconSize = new GSize(37, 34);
        blueIcon.shadowSize = new GSize(37, 34);
        blueIcon.iconAnchor = new GPoint(9, 34);
        blueIcon.infoWindowAnchor = new GPoint(9, 2);
        blueIcon.infoShadowAnchor = new GPoint(18, 14);

        function createMarker(point, i, message) {
           // Set up our GMarkerOptions object
           if(i==0) markerOptions = { icon:blueIcon };
           else markerOptions= {}
           var marker = new GMarker(point, markerOptions);
           GEvent.addListener(marker, "click", function() {
             marker.openInfoWindowHtml(message);
           });
           return marker;
        }
        {{for point in points:}}{{if point.latitude and point.longitude:}}
          var point = new GLatLng({{=point.latitude}},{{=point.longitude}});
          map.addOverlay(createMarker(point, 0, 
            '{{=point.get('map_marker',maker(point))}}'));
        {{pass}}{{pass}}
     }
    }
    //]]>
    </script>
    <div id="map" style="width: 800px; height: 500px"></div>
    <script>load();</script>