diff -r efd9c589177a -r c0b4a8b5a012 toolkit/javascript/d3/src/core/selection-style.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/src/core/selection-style.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,26 @@
+d3_selectionPrototype.style = function(name, value, priority) {
+  if (arguments.length < 3) priority = "";
+
+  // If no value is specified, return the first value.
+  if (arguments.length < 2) return window
+      .getComputedStyle(this.node(), null)
+      .getPropertyValue(name);
+
+  function styleNull() {
+    this.style.removeProperty(name);
+  }
+
+  function styleConstant() {
+    this.style.setProperty(name, value, priority);
+  }
+
+  function styleFunction() {
+    var x = value.apply(this, arguments);
+    if (x == null) this.style.removeProperty(name);
+    else this.style.setProperty(name, x, priority);
+  }
+
+  return this.each(value == null
+      ? styleNull : (typeof value === "function"
+      ? styleFunction : styleConstant));
+};