diff --git a/Repositories/Maps/gd_map.js b/Repositories/Maps/gd_map.js
new file mode 100755
index 0000000..eb1d269
--- /dev/null
+++ b/Repositories/Maps/gd_map.js
@@ -0,0 +1,79 @@
+/******************************************************************************
+ * Code adapted from Rasmus' 30 second AJAX Tutorial at:
+ *  http://rajshekhar.net/blog/archives/85-Rasmus-30-second-AJAX-Tutorial.html
+ ******************************************************************************/
+
+/******************************************************************************
+ * Create XMLHttpRequest object. This happens once when the page
+ * is loaded.
+ */
+function createRequestObject()
+{
+	var ro;
+	var browser = navigator.appName;
+	// In typical fashion, Microsoft does things differently.
+	if (browser == "Microsoft Internet Explorer")
+	{
+		ro = new ActiveXObject("Microsoft.XMLHTTP");
+	}
+	else
+	{
+		ro = new XMLHttpRequest();
+	}
+	return ro;
+}
+
+// Global XMLHttpRequest object.
+var http = createRequestObject();
+
+/******************************************************************************
+ * Send a request to the back end application (written in PHP here, but
+ * could be ASP, Java servlets, etc.). To use this, attach it to an (X)HTML
+ * element either as a direct link, e.g.:
+ *
+ *     <a href="javascript:sendRequest('foo', 'on')">[foo]</a>
+ *
+ * or via an onclick event, e.g.:
+ *
+ *     <img src="foo.jpg" onclick="javascript:sendRequest('foo', 'off')" />
+ *
+ * If you need different handlers for different things, just create them as
+ * separate PHP files on the back end, and dispatch appropriately from here.
+ * For example, if you want a separate handler for database operations, you
+ * could add another function called "sendDBRequest", or something similar.
+ */
+function load()
+{
+	// Somewhere to write the timing information to.
+	var timer = document.getElementById( "timer" );
+	timer.innerHTML = "Loading...";
+	
+	// Grab start time.
+	var startTime = new Date();
+	
+	// Open the request.
+	http.open('GET', 'coordinates.pl?width=900&height=457', true);
+	
+	// Set callback function.
+	http.onreadystatechange =
+		function()
+		{
+			if(http.readyState == 4)
+			{
+				if (http.status == 200) // Did it work?
+				{
+					// Grab the response content.
+					var response = http.responseText;
+					document.getElementById( "timer" ).innerHTML = '';
+				}
+			}
+			// Grab finishing time. We have to do this here rather than in
+			// the main part of the load() function because the map data
+			// are loaded asynchronously.
+			var endTime = new Date();
+			timer.innerHTML = 'Generated in ' + ( endTime - startTime ) + 	' ms.';
+		};
+	
+	// Send the request.
+	http.send(null);
+}