画圈:
circle = new BMap.Circle(new BMap.Point(lg, lt), 2000, { fillColor: "blue", strokeWeight: 1, fillOpacity: 0.2, strokeOpacity: 0.2 });//半径2公里瞄点
map.addOverlay(circle)
利用map.setMapStyle方法个性化,如:
map.setMapStyle({
            styleJson: [{
                "featureType": "poi",
                "elementType": "all",
                "stylers": {
                    "color": "#ffffff",
                    "visibility": "off"
                }
            }]
        });
原文:http://www.cnblogs.com/taketo/p/6844796.html