rem: this.commands[aCommand](gExtensionsView.selected); 
add: this.commands[aCommand](gExtensionsView.selectedItem); 
context:   doCommand: function (aCommand)  {    if (this.isCommandEnabled(aCommand))      this.commands[aCommand](gExtensionsView.selected);  },  
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/eeff8284185c873422464b5a58c40d3ccfca690c/extensions.js/clean/toolkit/mozapps/extensions/content/extensions.js