rem: this.showXULChrome("menubar", window.fullScreen); 
context:   toggle: function()  {    // show/hide all menubars, toolbars, and statusbars (except the full screen toolbar)    this.showXULChrome("menubar", window.fullScreen);    this.showXULChrome("toolbar", window.fullScreen);    this.showXULChrome("statusbar", window.fullScreen);  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/c3048d6cf7433e5f5a74ceb37036b7e769e5499a/browser.js/clean/browser/base/content/browser.js