old_contents: (function(d3, fc) {
      'use strict';
  
      // returns the width and height of the given element minus the padding.
      fc.util.innerDimensions = function(element) {
          var style = getComputedStyle(element);
          return {
              width: parseFloat(style.width) - parseFloat(style.paddingLeft) - parseFloat(style.paddingRight),
              height: parseFloat(style.height) - parseFloat(style.paddingTop) - parseFloat(style.paddingBottom)
          };
      };
  }(d3, fc));
  
new_contents: (function(d3, fc) {
      'use strict';
  
      // returns the width and height of the given element minus the padding.
      fc.util.innerDimensions = function(element) {
          var style = element.ownerDocument.defaultView.getComputedStyle(element);
          return {
              width: parseFloat(style.width) - parseFloat(style.paddingLeft) - parseFloat(style.paddingRight),
              height: parseFloat(style.height) - parseFloat(style.paddingTop) - parseFloat(style.paddingBottom)
          };
      };
  }(d3, fc));
  
subject: Fix reference to getComputedStyle