rem: rootShell.observerService.Notify(this.mTxMgrShell.mDataSource.mDataSource, "vfd-focus", this); 
add: rootShell.observerService.notifyObservers(this.mTxMgrShell.mDataSource.mDataSource, "vfd-focus", this); 
context:   focusVFD: function ()  {    var rootShell = vxUtils.getRootShell();    // for a focused vfd, send "vfd,url"    // vixenMain.vxShell.mFocusObserver.Notify({ }, "window_focus", ("vfd," + this.mParams.documentURL));    rootShell.mFocusedWindow = window;        if (this.mTxMgrShell) {      try {        rootShell.observerService.Notify(this.mTxMgrShell.mDataSource.mDataSource, "vfd-focus", this);      }      catch (e) {        // No big deal, no observers.             }    }  },
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/d18d7e2b176a10ab2598f8549a9bd79b1a50de28/vfd.js/clean/extensions/vixen/resources/content/vfd/vfd.js