Google Map v3 (offsetting markers in same coordinates)

    function load() {
      var map = new google.maps.Map(document.getElementById("map"), {
//        center: new google.maps.LatLng(38.548165,-96.416016),
//      center: new google.maps.LatLng(35.65897,-101.390762),
center: new google.maps.LatLng(35.738222,-101.493545),
        zoom: 15,
        mapTypeId: 'roadmap'
      });
      var infoWindow = new google.maps.InfoWindow;

      // Change this depending on the name of your PHP file
      downloadUrl("10same.xml", function(data) {
        var xml = data.responseXML;
        var markers = xml.documentElement.getElementsByTagName("marker");
        for (var i = 0; i < markers.length; i++) {
          var city = markers[i].getAttribute("city");
          var fullstate = markers[i].getAttribute("fullstate");
          var zip = markers[i].getAttribute("zip");
          var point = new google.maps.LatLng(
        parseFloat(markers[i].getAttribute("latitude")),
        parseFloat(markers[i].getAttribute("longitude")));



//================================================================
// The var point above renders the marker in their locations.
// If I comment it out, I found I can also render them with:
//  realLat = markers[i].getAttribute("latitude");
//  realLon = markers[i].getAttribute("longitude");
//  var point = new google.maps.LatLng(realLat, realLon);
//================================================================



          var html = "<b>" + city + "</b> <br/>" + fullstate;
          var icon = customIcons[fullstate] || {};
          var marker = new google.maps.Marker({
            map: map,
            position: point,
            icon: icon.icon,
            shadow: icon.shadow
          });
        bindInfoWindow(marker, map, infoWindow, html);
        }
      });
    }

    function bindInfoWindow(marker, map, infoWindow, html) {
      google.maps.event.addListener(marker, 'click', function() {
        infoWindow.setContent(html);
        infoWindow.open(map, marker);
      });
    }

    function downloadUrl(url, callback) {
      var request = window.ActiveXObject ?
          new ActiveXObject('Microsoft.XMLHTTP') :
          new XMLHttpRequest;

      request.onreadystatechange = function() {
        if (request.readyState == 4) {
          request.onreadystatechange = doNothing;
          callback(request, request.status);
        }
      };

      request.open('GET', url, true);
      request.send(null);
    }

    function doNothing() {}