百度API定位不准确，请问怎么回事？

[fkueyga6]

<script type="text/javascript">
window.onload = function() {
if(navigator.geolocation) {
//document.getElementById("status").innerHTML = "HTML5 Geolocation is supported in your browser.";
// 百度地图API功能
var map = new BMap.Map("container");
var point = new BMap.Point(114.21892734521,29.575429778924);
var geoc = new BMap.Geocoder();
//map.centerAndZoom(point,20);
//map.enableScrollWheelZoom();

var geolocation = new BMap.Geolocation();
geolocation.getCurrentPosition(function(r){
if(this.getStatus() == BMAP_STATUS_SUCCESS){
var mk = new BMap.Marker(r.point);
map.addOverlay(mk);
map.panTo(r.point);
document.getElementById('lat').value = r.point.lat;
document.getElementById('lng').value = r.point.lng;

geoc.getLocation(r.point, function (rs) {
var addComp = rs.addressComponents;
var address = addComp.province + addComp.city + addComp.district + addComp.street + addComp.streetNumber;
$("#neirong").html("您的地址是："+address);
});
}
else {
alert('failed'+this.getStatus());
}
},{enableHighAccuracy: true})
}
};
</script>

[fkueyga6]

<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=省略"></script>