rem: updateCommand: function (command) 
add: updateCommand: function (command) 
context:   updateCommand: function (command)   {    if (this.isCommandEnabled(command.id))      command.removeAttribute("disabled");    else      command.setAttribute("disabled", "true");  },
meta: 10520	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10520/c638d38804a8a1b23aaee5ccd66bb42aad5a242e/extensions.js/buggy/toolkit/mozapps/extensions/content/extensions.js