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: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/148f27f947c26f83d75c5ad5c64f1169df23316b/extensions.js/buggy/toolkit/mozapps/extensions/content/extensions.js