diff --git a/web/ons-demo/js/controller.js b/web/ons-demo/js/controller.js
new file mode 100644
index 0000000..86a7905
--- /dev/null
+++ b/web/ons-demo/js/controller.js
@@ -0,0 +1,32 @@
+var controllerFunctions = {
+	link: function (cmd, src, dst) {
+		var url = '/proxy/gui/link/' + [cmd, src.dpid, 1, dst.dpid, 1].join('/');
+		d3.json(url, function (error, result) {		
+			if (error) {
+				alert(url + ' : ' + error.status);
+			}
+		});
+	}
+}
+
+
+// if (parseURLParameters().mock) {
+// 	urls = mockURLs;
+// }
+
+
+function linkUp(src, dst) {
+	controllerFunctions.link('up', src, dst);
+}
+
+function linkDown(src, dst) {
+	controllerFunctions.link('down', src, dst);
+}
+
+function createFlow(src, dst) {
+
+}
+
+function deleteFlow(src, dst) {
+
+}
\ No newline at end of file