if (GBrowserIsCompatible()) {

     var baseIcon = new GIcon();
          baseIcon.iconSize=new GSize(16,28);
          baseIcon.shadowSize=new GSize(40,28);
          baseIcon.iconAnchor=new GPoint(16,32);
          baseIcon.infoWindowAnchor=new GPoint(16,0);
          
      var society = new GIcon(baseIcon, "http://www.alzheimers.org.uk/site/images/alzh.png", null, "http://www.alzheimers.org.uk/site/images/pin_shadow.png");
      var transport = new GIcon(baseIcon, "http://www.alzheimers.org.uk/site/images/trans.png", null, "http://www.alzheimers.org.uk/site/images/pin_shadow.png");
    
      function createMarker(point,html,icon) {
        var marker = new GMarker(point,icon);
        GEvent.addListener(marker, "click", function() {
          marker.openInfoWindowHtml(html);
        });
        return marker;
      }
      
// -------
      var map = new GMap2(document.getElementById("map"));


     map.addControl(new GLargeMapControl());

     map.setCenter(new GLatLng(51.506045,-0.071282), 15, G_NORMAL_MAP);
      
      // Alzheimers Society    
      var point = new GLatLng(51.506045,-0.071282);
      var marker = createMarker(point,'<div style="width:200px;"><p><strong>Alzheimer&#39;s Society</strong></p><p>Devon House, 58 St Katharines Way, London, E1W 1JX</p></div>', society);
      map.addOverlay(marker);            

      // Tower Hill tube station    
      var point = new GLatLng(51.510078,-0.076303);
      var marker = createMarker(point,'<div style="width:200px;"><img src="http://www.alzheimers.org.uk/site/images/TFL.gif" class="locationmap" style="height:30px;width:38px;float:left;" /><p><strong>Tower Hill</strong></p><p><a href="http://maps.google.co.uk/local_url?q=http://journeyplanner.tfl.gov.uk/user/XSLT_SOI_REQUEST%3Flanguage%3Den%26type%3Dstop%26id%3D1000238&dq=&ftid=0x4876034c074c58dd:0x3d6420fd346bdbe4&hl=en&callback=_xdc_._7f5ez4e6g&oi=transit_iw_schedules_link&sa=X&ct=station&cd=1&ei=swbERqv7IobA2ALK2PjWAw">Circle and District lines</a></p></div>', transport);
      map.addOverlay(marker);   
      
      // London Bridge   
      var point = new GLatLng(51.505457,-0.086517);
      var marker = createMarker(point,'<div style="width:200px;"><img src="http://www.alzheimers.org.uk/site/images/TFL.gif" class="locationmap" style="height:30px;width:38px;float:left;" /><p><strong>London Bridge</strong></p><p><a href="http://maps.google.co.uk/local_url?q=http://journeyplanner.tfl.gov.uk/user/XSLT_SOI_REQUEST%3Flanguage%3Den%26type%3Dstop%26id%3D1000139&dq=&ftid=0x48760350beb2d71f:0xd39c51f6881bb211&hl=en&callback=_xdc_._ff5ez9wwj&oi=transit_iw_schedules_link&sa=X&ct=station&cd=1&ei=tQfERtbDAYbA2ALK2PjWAw">Jubilee and Northern lines</a></p></div>', transport);
      map.addOverlay(marker);   
    }

    else {
      alert("Sorry, the Google Maps API is not compatible with this browser");
    }