Added flash messages.

Change-Id: If3f8650b5dc977dca27fb764ab57f2e11a21682d
diff --git a/web/gui/src/main/webapp/feedback.js b/web/gui/src/main/webapp/feedback.js
index 7cebdc1..10f87c9 100644
--- a/web/gui/src/main/webapp/feedback.js
+++ b/web/gui/src/main/webapp/feedback.js
@@ -32,8 +32,8 @@
     // Config variables
     var w = '100%',
         h = 200,
-        fade = 500,
-        showFor = 2000,
+        fade = 200,
+        showFor = 500,
         vb = '-200 -' + (h/2) + ' 400 ' + h,
         xpad = 20,
         ypad = 10;
diff --git a/web/gui/src/main/webapp/topo2.js b/web/gui/src/main/webapp/topo2.js
index 1222f9c..9db6461 100644
--- a/web/gui/src/main/webapp/topo2.js
+++ b/web/gui/src/main/webapp/topo2.js
@@ -841,12 +841,14 @@
             two: getSelId(1),
             ids: [ getSelId(0), getSelId(1) ]
         });
+        network.view.flash('Host-to-Host connectivity added');
     }
 
     function showTrafficAction() {
         // force intents hover mode
         hoverMode = 1;
         showSelectTraffic();
+        network.view.flash('Related Traffic');
     }
 
     function showSelectTraffic() {
@@ -869,12 +871,14 @@
 
     function showAllTrafficAction() {
         sendMessage('requestAllTraffic', {});
+        network.view.flash('All Traffic');
     }
 
     function showDeviceLinkFlowsAction() {
         // force intents hover mode
         hoverMode = 2;
         showDeviceLinkFlows();
+        network.view.flash('Device Flows');
     }
 
     function showDeviceLinkFlows() {