code: function(element, styleName){
          var view = element.ownerDocument.defaultView,
              style = (view ? view.getComputedStyle(element, null) : element.currentStyle) || element.style;
          return style[styleName];
      }
docs: this is a local copy of certain logic from (Abstract)Element.getStyle to break a dependancy between the supports mechanism and Element use this instead of element references to check for styling info