add cursor change for non-allowed operations
diff --git a/web/ons-demo/css/skin.default.css b/web/ons-demo/css/skin.default.css
index 579d940..5f3d114 100644
--- a/web/ons-demo/css/skin.default.css
+++ b/web/ons-demo/css/skin.default.css
@@ -6,6 +6,14 @@
 	margin: 0px;
 }
 
+#topology.linking {
+	cursor: crosshair;
+}
+
+.nodrop {
+	cursor: not-allowed;
+}
+
 .status {
 	padding: 1em;
 }