code: function(state, title, url) {
        var t = document.title;
        if (lastTitle != null) {
          document.title = lastTitle;
        }
        delete stateStorage[windowLocation.href];
        historyReplaceState && fastFixChrome(historyReplaceState, arguments);
        changeState(state, url, true);
        document.title = t;
        lastTitle = title;
      }
docs: The method updates the state object,
  title, and optionally the URL of the
  current entry in the history.
  
  @namespace history
  @param {Object} state
  @param {string} title
  @param {string} [url]