var obj_google_map;
var obj_google_geo;

function googlemap_init() {
	var zoom_data = parseInt(document.getElementById("gmap_zoom").value, 10) - 3;
	var latlng = new google.maps.LatLng(41, 133);
	var opts = {
		zoom: zoom_data,
		mapTypeId: google.maps.MapTypeId.ROADMAP,
		center: latlng,
		scrollwheel: false
	};
	obj_google_map = new google.maps.Map(document.getElementById("google_map"), opts);
	obj_google_geo = new google.maps.Geocoder();
	var req = {
		address: decodeURIComponent(document.getElementById("gmap_address").value) ,
	};
	obj_google_geo.geocode(req, gMapResultCallback);
}

function gMapResultCallback(result, status) {
	if (status != google.maps.GeocoderStatus.OK) {
		alert(status);
		return;
	}
	if(document.getElementById("gmap_lat").value == "" && document.getElementById("gmap_lon").value == ""){
		var latlng = result[0].geometry.location;
	}
	else{
		var latlng = new google.maps.LatLng(document.getElementById("gmap_lat").value,document.getElementById("gmap_lon").value);
	}
	obj_google_map.setCenter(latlng);
	var marker = new google.maps.Marker({position:latlng, map:obj_google_map, title:latlng.toString(), draggable:false, zoomControl:true});
	google.maps.event.addListener(marker, 'dragend', function(event){
		marker.setTitle(event.latLng.toString());
	});
}