add: var saveFrameItem = document.getElementById("savepage"); 
context: function contentAreaFrameFocus(){  var saveFrameItem = document.getElementById("savepage");  var focusedWindow = document.commandDispatcher.focusedWindow;  if (isDocumentFrame(focusedWindow)) {    gFocusedURL = focusedWindow.location.href;    saveFrameItem.removeAttribute("hidden");  }}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/3305b31ac7b91ea88403976f95b2980161527e7e/navigator.js/clean/suite/browser/navigator.js