--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/src/core/event.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,6 @@
+d3.event = null;
+
+function d3_eventCancel() {
+  d3.event.stopPropagation();
+  d3.event.preventDefault();
+}