diff --git a/docroot/last/functions.js b/docroot/last/functions.js
index 38bc42c..e57c53a 100644
--- a/docroot/last/functions.js
+++ b/docroot/last/functions.js
@@ -26,6 +26,44 @@ function initialize() {
 	};
 
 	map = new google.maps.Map(document.getElementById("map-canvas"), mapOptions);
+
+	/* Create the DIV to hold the control and call constructor */
+	var buttonControlDiv = document.createElement('div');
+	var buttonControl = new ButtonControl(buttonControlDiv, map);
+
+	buttonControlDiv.index = 1;
+	map.controls[google.maps.ControlPosition.BOTTOM_LEFT].push(buttonControlDiv);
+}
+
+function ButtonControl(controlDiv, map) {
+
+	// Set CSS for the control border.
+	var controlUI = document.createElement('div');
+	controlUI.style.backgroundColor = '#fff';
+	controlUI.style.border = '2px solid #fff';
+	controlUI.style.borderRadius = '3px';
+	controlUI.style.boxShadow = '0 2px 6px rgba(0,0,0,.3)';
+	controlUI.style.cursor = 'pointer';
+	controlUI.style.marginBottom = '22px';
+	controlUI.style.textAlign = 'center';
+	controlUI.title = 'Click to toggle Autozoom (zoom to fit)';
+	controlDiv.appendChild(controlUI);
+
+	// Set CSS for the control interior.
+	var controlText = document.createElement('div');
+	controlText.style.color = 'rgb(25,25,25)';
+	controlText.style.fontFamily = 'Roboto,Arial,sans-serif';
+	controlText.style.fontSize = '16px';
+	controlText.style.lineHeight = '38px';
+	controlText.style.paddingLeft = '5px';
+	controlText.style.paddingRight = '5px';
+	controlText.innerHTML = 'Autozoom';
+	controlUI.appendChild(controlText);
+
+	// Setup the click event listeners: simply set the map to Chicago.
+	controlUI.addEventListener('click', function() {
+		do_fit = !do_fit;
+	});
 }
 
 function clog(upd, id, s) {