rem: if (GetNumSelectedMessages() <= 0) enabled = false; 
add:  switch (command) { case "goto_folder_button": if (GetNumSelectedMessages() != 1) enabled = false; break; default: if (GetNumSelectedMessages() <= 0) enabled = false; break; } 
context:     isCommandEnabled: function(command)    {        var enabled = true;        if (GetNumSelectedMessages() <= 0)          enabled = false;        return enabled;    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/40dfed30ccb262ba82c984f2c5271a2e40ed0b97/SearchDialog.js/clean/mailnews/base/search/resources/content/SearchDialog.js