Google地图，移动标记点获取新的经纬度

function createMarker(point,title,html) {
var marker=new GMarker(point,{draggable:true});
GEvent.addListener(marker, "click", function() 
        {
            marker.openInfoWindowHtml(
                html,
                {
                    maxContent: html,
                    maxTitle: title}
                );
        });

GEvent.addListener( marker,"dragstart",function(){ map.closeInfoWindow(); } );
GEvent.addListener( marker,"dragend",function(){
                           point1=marker.getPoint();
                           map.panTo(point1);    
                           marker.openInfoWindowHtml(point1.lat()+"<br>"+point1.lng());
                                                }
                    );

      return marker;

}