rem: return gBrowser.webNavigation; 
add: return helpBrowser.webNavigation; 
context: function getWebNavigation(){  return gBrowser.webNavigation;}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/5a71730a3b1326ac2406feeaa920455f7da09e96/help.js/buggy/extensions/help/resources/content/help.js