_blur = function() {
    var htmlBridge = _getHtmlBridge(_flashState.bridge);
    if (htmlBridge) {
      htmlBridge.removeAttribute("title");
      htmlBridge.style.left = "0px";
      htmlBridge.style.top = "-9999px";
      htmlBridge.style.width = "1px";
      htmlBridge.style.height = "1px";
    }
    if (_currentElement) {
      _removeClass(_currentElement, _globalConfig.hoverClass);
      _removeClass(_currentElement, _globalConfig.activeClass);
      _currentElement = null;
    }
  }
The underlying implementation of `ZeroClipboard.blur`/`ZeroClipboard.deactivate`.
@private