function addMap(){

	var WINDOW_HTML = '<div id="mapDetails"><p><strong>Hotel Playa Terreros</strong><br />C/ Bailen, s/n<br />San Juan de los Terreros</p></div>';
    
	var map = new GMap(document.getElementById("mapDiv"));
	map.addControl(new GSmallMapControl());
	map.setCenter(new GLatLng(37.359404, -1.656425), 17);
	var marker = new GMarker(new GLatLng(37.359404, -1.656425));
   map.addOverlay(marker);
	GEvent.addListener(marker, 'click', function() {
     marker.openInfoWindowHtml(WINDOW_HTML);
   });
   marker.openInfoWindowHtml(WINDOW_HTML);
}

window.onload = addMap;