function onLoad() {
var icon = new GIcon();
icon.image = "/image/marker/marker1.png";
icon.shadow = "/image/marker/shadow.png";
icon.iconSize = new GSize(20, 34);
icon.shadowSize = new GSize(37, 34);
icon.iconAnchor = new GPoint(9, 34);
icon.infoWindowAnchor = new GPoint(9, 2);
icon.infoShadowAnchor = new GPoint(18, 25);

var map = new GMap(document.getElementById("entrymap"));
map.addControl(new GSmallMapControl());
map.addControl(new GMapTypeControl());
map.centerAndZoom(new GPoint(139.580158, 35.704583), 1);

var point = new GPoint(139.580158, 35.704583);
var marker = new GMarker(point);
map.addOverlay(marker);
}