code: function(node) {
          node.style.visibility = "visible";
          var fillColor = node._style.fillColor;
          var strokeColor = node._style.strokeColor;
          if (fillColor == "none" &&
                  node.fillcolor != fillColor) {
              node.fillcolor = fillColor;
          }
          if (strokeColor == "none" &&
                  node.strokecolor != strokeColor) {
              node.strokecolor = strokeColor;
          }
      }
docs: Method: postDraw
  Does some node postprocessing to work around browser issues:
  - Some versions of Internet Explorer seem to be unable to set fillcolor
  and strokecolor to "none" correctly before the fill node is appended
  to a visible vml node. This method takes care of that and sets
  fillcolor and strokecolor again if needed.
  - In some cases, a node won't become visible after being drawn. Setting
  style.visibility to "visible" works around that.
  
  Parameters:
  node - {DOMElement}