diff --git a/web/ons-demo/js/controllers.js b/web/ons-demo/js/controllers.js
new file mode 100644
index 0000000..75f2689
--- /dev/null
+++ b/web/ons-demo/js/controllers.js
@@ -0,0 +1,65 @@
+function updateControllers() {
+	var controllers = d3.select('#controllerList').selectAll('.controller').data(model.controllers);
+	controllers.enter().append('div')
+		.each(function (c) {
+			controllerColorMap[c] = colors.pop();
+			d3.select(document.body).classed(controllerColorMap[c] + '-selected', true);
+		})
+		.text(function (d) {
+			return d;
+		})
+		.append('div')
+		.attr('class', 'black-eye');
+
+	controllers.attr('class', function (d) {
+			var color = 'colorInactive';
+			if (model.activeControllers.indexOf(d) != -1) {
+				color = controllerColorMap[d];
+			}
+			var className = 'controller ' + color;
+			return className;
+		});
+
+	// this should never be needed
+	// controllers.exit().remove();
+
+	controllers.on('dblclick', function (c) {
+		if (model.activeControllers.indexOf(c) != -1) {
+			var prompt = 'Dectivate ' + c + '?';
+			if (confirm(prompt)) {
+				controllerDown(c);
+				setPending(d3.select(this));
+			};
+		} else {
+			var prompt = 'Activate ' + c + '?';
+			if (confirm(prompt)) {
+				controllerUp(c);
+				setPending(d3.select(this));
+			};
+		}
+	});
+
+	controllers.select('.black-eye').on('click', function (c) {
+		var allSelected = true;
+		for (var key in controllerColorMap) {
+			if (!d3.select(document.body).classed(controllerColorMap[key] + '-selected')) {
+				allSelected = false;
+				break;
+			}
+		}
+		if (allSelected) {
+			for (var key in controllerColorMap) {
+				d3.select(document.body).classed(controllerColorMap[key] + '-selected', key == c)
+			}
+		} else {
+			for (var key in controllerColorMap) {
+				d3.select(document.body).classed(controllerColorMap[key] + '-selected', true)
+			}
+		}
+
+		// var selected = d3.select(document.body).classed(controllerColorMap[c] + '-selected');
+		// d3.select(document.body).classed(controllerColorMap[c] + '-selected', !selected);
+	});
+
+
+}
\ No newline at end of file