code: function(node, att, style) {
          style = style || node.style;
          var CUSTOM_STYLES = Y_DOM.CUSTOM_STYLES,
              val = '';
  
          if (style) {
              if (att in CUSTOM_STYLES) {
                  if (CUSTOM_STYLES[att].get) {
                      return CUSTOM_STYLES[att].get(node, att, style); // NOTE: return
                  } else if (typeof CUSTOM_STYLES[att] === 'string') {
                      att = CUSTOM_STYLES[att];
                  }
              }
              val = style[att];
              if (val === '') { // TODO: is empty string sufficient?
                  val = Y_DOM[GET_COMPUTED_STYLE](node, att);
              }
          }
  
          return val;
      }
docs: Returns the current style value for the given property.
  @method getStyle
  @param {HTMLElement} An HTMLElement to get the style from.
  @param {String} att The style property to get.