説明
		
			
			
		
カスタムオーバーレイはテキストや画像を用意しマップにappendChild()を使って追加し表示を行います。
続きは書籍で、どうぞ...
				 
			
				
				
		<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
		<html xmlns="http://www.w3.org/1999/xhtml">
		<head>
		<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
		<title>Sample</title>
		<style type="text/css"><!--
		#msg {
		 position:absolute;
		 left:200px;
		 top:150px;
		 width:200px;
		 height:100px;
		 background-color:yellow;
		 opacity:0.5;
		 filter:alpha(opacity=50);
		 border:2px red solid;
		}
		--></style>
		<script src="http://maps.google.com/maps?file=api&v=2&key=ABQIAAAAasAJryKxWJnBFVJa487d9hTHGAxTVT7IRADYa-JdYz7xQ8IQZBSthgDZdggYpQHsmm6WYtHstQFfLA" type="text/javascript"></script>
		<script type="text/javascript">
		//<![CDATA[
		 var map, customDiv;
		 function customBox() { }
		 customBox.prototype = new GOverlay();
		 customBox.prototype.initialize = function(map) {
		  map.getPane(G_MAP_MAP_PANE).appendChild(customDiv);
		 }
		 customBox.prototype.redraw = function(force){}
		 window.onload = function() {
		  map = new GMap2(document.getElementById("map"));
		  map.setCenter(new GLatLng(37,136), 5,G_NORMAL_MAP);
		  customDiv = document.getElementById("msg");
		  map.addOverlay(new customBox());
		 }
		 //]]>
		</script>
		</head>
		<body>
		<div id="map" style="width: 500px; height: 400px"></div>
		<div id="msg">カスタムオーバーレイのサンプルです</div>
		</body>
		</html>