// create google map icons

var icon_a = new GIcon();
icon_a.image = "http://labs.google.com/ridefinder/images/mm_20_yellow.png";
icon_a.shadow = "http://labs.google.com/ridefinder/images/mm_20_shadow.png";
icon_a.iconSize = new GSize(12, 20);
icon_a.shadowSize = new GSize(20, 20);
icon_a.iconAnchor = new GPoint(2, 6);
icon_a.infoWindowAnchor = new GPoint(2, 6);

var icon_b = new GIcon();
icon_b.image = "http://labs.google.com/ridefinder/images/mm_20_red.png";
icon_b.shadow = "http://labs.google.com/ridefinder/images/mm_20_shadow.png";
icon_b.iconSize = new GSize(12, 20);
icon_b.shadowSize = new GSize(20, 20);
icon_b.iconAnchor = new GPoint(12, 20);
icon_b.infoWindowAnchor = new GPoint(12, 20);

var icon_c = new GIcon();
icon_c.image = "http://labs.google.com/ridefinder/images/mm_20_blue.png";
icon_c.shadow = "http://labs.google.com/ridefinder/images/mm_20_shadow.png";
icon_c.iconSize = new GSize(12, 20);
icon_c.shadowSize = new GSize(12, 20);
icon_c.iconAnchor = new GPoint(2, 6);
icon_c.infoWindowAnchor = new GPoint(2, 6);


// test compatibility and build map

if (GBrowserIsCompatible()) {
		
	// create google map
	var map = new GMap2(document.getElementById("map"));
	map.setCenter(new GLatLng(42.361956,-71.079692), 14);
	map.addControl(new GLargeMapControl());
	map.addControl(new GMapTypeControl());
	
	var gmarkers = [];
	var i = 0;
	
	
	// create map icon and associated window
	function createMarker(point,mapicon,name,html) {
		if (mapicon == 'yellow'){
				icon = icon_a;
			} else if (mapicon == 'red'){
				icon = icon_b;	
			} else if (mapicon == 'blue'){
				icon = icon_c;
		}
		
		var marker = new GMarker(point, icon);
		map.openInfoWindow(point, '<div id="mapWindow">'+html+'</div>');
		//gmarkers[i] = marker;
		
		// comment out sidebar!
		//side_bar_html += '<a href="javascript:myclick(' + i + ')">' + name + '</a><br>';
		//i++;
		return marker;
	}
	
	function myclick(i) {
		GEvent.trigger(gmarkers[i], "click");
	}	
	
	// parse XML data
	var request = GXmlHttp.create();
	request.open("GET", "/contact/xml/mashup.xml", true);
	request.onreadystatechange = function() {
		if (request.readyState == 4) {
			var xmlDoc = GXml.parse(request.responseText);
			
			var markers = xmlDoc.documentElement.getElementsByTagName("marker");
			
			for (var i = 0; i < markers.length; i++) {
				var lat = parseFloat(markers[i].getAttribute("lat"));
				var lng = parseFloat(markers[i].getAttribute("lng"));
				var point = new GLatLng(lat,lng);
				var html = markers[i].getAttribute("html");
				var label = markers[i].getAttribute("label");
				var mapicon = markers[i].getAttribute("icon");
				
				var marker = createMarker(point,mapicon,label,html);
				map.addOverlay(marker);
			}
			// comment out sidebar!
			//document.getElementById("side_bar").innerHTML = side_bar_html;
		}
	}
	request.send(null);
}

else {
	alert("Google Maps API is not compatible with this browser");
}