关于百度地图焦点偏移

<script type="text/javascript" src="http://api.map.baidu.com/getscript?v=2.0&amp;ak=这里写自己的秘钥&amp;services=&amp;t=20170608143204"></script>

<script type="text/javascript">
	var map = new BMap.Map("allmap");
	var point = new BMap.Point(120.211061,30.285418);
	map.centerAndZoom(point, 15);
	*map.panBy(0,-220); *//初始化点偏移 向上偏移220px


	var marker = new BMap.Marker(point);  // 创建标注
	map.addOverlay(marker);               // 将标注添加到地图中
	marker.setAnimation(BMAP_ANIMATION_BOUNCE); //跳动的动画
	map.enableScrollWheelZoom(true);
	map.enableDragging(true);   //开启拖拽
</script>