diff -r efd9c589177a -r c0b4a8b5a012 toolkit/javascript/d3/src/core/array.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/src/core/array.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,29 @@
+var d3_array = d3_arraySlice; // conversion for NodeLists
+
+function d3_arrayCopy(pseudoarray) {
+  var i = -1, n = pseudoarray.length, array = [];
+  while (++i < n) array.push(pseudoarray[i]);
+  return array;
+}
+
+function d3_arraySlice(pseudoarray) {
+  return Array.prototype.slice.call(pseudoarray);
+}
+
+try {
+  d3_array(document.documentElement.childNodes)[0].nodeType;
+} catch(e) {
+  d3_array = d3_arrayCopy;
+}
+
+var d3_arraySubclass = [].__proto__?
+
+// Until ECMAScript supports array subclassing, prototype injection works well.
+function(array, prototype) {
+  array.__proto__ = prototype;
+}:
+
+// And if your browser doesn't support __proto__, we'll use direct extension.
+function(array, prototype) {
+  for (var property in prototype) array[property] = prototype[property];
+};