var icon =new GIcon();
icon.image="http://lh5.ggpht.com/_JvM4GMjz5T8/Stg2IgjijWI/AAAAAAAAAa4/SjEVYVbfYwk/fdsafasd.png";
icon.shadow="http://lh4.ggpht.com/_JvM4GMjz5T8/Stg2ISOWuTI/AAAAAAAAAa0/7eFQic5JUhk/tre.png";
icon.iconSize=new GSize(299,216);//画像のサイズ
icon.shadowSize=new GSize(299,216;
icon.iconAnchor=new GPoint(133,108);
icon.infoWindowAnchor=
new GPoint(190,45);
icon.infoShadowAnchor=
new GPoint(190,45);
var point=new GPoint();
var marker=new GMarker(poit,icon);
GEvent.addLintener.addListener(maker,"click",function(){
marker.openInfoWindowHtml("・・・");
};
map.addOverlay(marker);