diff --git a/js/lib/d3.dimensions.js b/js/lib/d3.dimensions.js
index 7f9ef0521..d54a05e25 100644
--- a/js/lib/d3.dimensions.js
+++ b/js/lib/d3.dimensions.js
@@ -1,8 +1,10 @@
 d3.selection.prototype.dimensions = function (dimensions) {
     if (!arguments.length) {
         var node = this.node();
-        return [node.offsetWidth,
-                node.offsetHeight];
+        if (!node) return;
+
+        var cr = node.getBoundingClientRect();
+        return [cr.width, cr.height];
     }
     return this.attr({width: dimensions[0], height: dimensions[1]});
 };