diff -r efd9c589177a -r c0b4a8b5a012 toolkit/javascript/d3/src/core/max.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/src/core/max.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,14 @@
+d3.max = function(array, f) {
+  var i = -1,
+      n = array.length,
+      a,
+      b;
+  if (arguments.length === 1) {
+    while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
+    while (++i < n) if ((b = array[i]) != null && b > a) a = b;
+  } else {
+    while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
+    while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
+  }
+  return a;
+};