<apex:page standardController="Account" sidebar="false">
<script src="//maps.google.com/maps?file=api&amp;v=2&amp;key=ABQIAAAAzr2EBOXUKnm_jVnk0OJI7xSosDVG8KKPE1-m51RBrvYughuyMxQ-i1QfUnH94QxWIa6N4U6MouMmBA&sensor=false" type="text/javascript"></script>
<script type="text/javascript">
            var map = null;
            var geocoder = null;         
            function initialize() {
                if (GBrowserIsCompatible()) {
                    map = new GMap2(document.getElementById("map_canvas"));
                    map.setCenter(new GLatLng(24.957639, 46.698775), 4);
                    geocoder = new GClientGeocoder();
                    map.setUIToDefault();                 
                }
            }
 
            function createMarker(point,address)
            {  
                // Create our "tiny" marker icon
                var blueIcon = new GIcon(G_DEFAULT_ICON);
                blueIcon.image = "http://gmaps-samples.googlecode.com/svn/trunk/markers/green/blank.png";
                blueIcon.iconSize = new GSize(32, 32)
                // Set up our GMarkerOptions object
                markerOptions = { icon:blueIcon };
                var marker = new GMarker(point, markerOptions);
                GEvent.addListener(marker, "click", function() {
                    marker.openInfoWindowHtml("<b>"+address+"</b>");
                });
                return marker;
            }
            function showAddress()
            {
                var address1='{!Account.BillingCity}'+'|'+'{!Account.ShippingCity}';
                var address=address1.split('|');
                for(var i=0;i<address.length;i++)
                {
                    if(address[i] == ''){continue;}
                    var addPart = address[i];
                    //alert("addM('" + addPart[0] + "','" + addPart[1] + "');");
                    //setTimeout("addM('" + addPart + "');",300);
                    addM(addPart);
                }
            }
 
            function addM(add)
            {
                add = add + ",India";
                if (geocoder)
                {
                    geocoder.getLatLng(add,function(point)
                        {
                            if (!point)
                            {
                                alert(add + " not found");
                            }
                            else
                            {                            
                                map.addOverlay(createMarker(point,add));                           
                            }
                        }
                    );                 
                }
 
            }
</script>
       
  <apex:form >  
      <div id="map_canvas" style="width: 989px; height: 250px"></div>
      <input type="button" value = "Show Markers" onClick="showAddress();"/>    
  </apex:form>
  <script type="text/javascript">
      initialize();
  </script>    
</apex:page>