add mouse over highlighting of selected flows
diff --git a/web/ons-demo/css/skin.default.css b/web/ons-demo/css/skin.default.css
index 5607190..e9bb1d7 100644
--- a/web/ons-demo/css/skin.default.css
+++ b/web/ons-demo/css/skin.default.css
@@ -61,6 +61,10 @@
 	border-bottom: 1px solid #AAA;
 }
 
+.selectedFlow:hover {
+	background-color: #333;
+}
+
 .selectedFlow:last-child {
 	border-bottom: none;
 }
@@ -132,6 +136,11 @@
 	stroke: rgba(255, 255, 255, .35);
 }
 
+path.flow.highlight {
+	stroke-width: 6px;
+	stroke: rgba(255, 255, 255, .75);
+}
+
 #selectedFlowsHeader {
 	border-top: 1px solid #AAA;
 }