doCommand: function (aCommand) 
doCommand: function(aCommand) 
  doCommand: function (aCommand)  {    if (this.isCommandEnabled(aCommand))      this.commands[aCommand](gDownloadsView.selectedItem);  },  
5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5459/43455f9fc69a7b8e33dae13cc90fd333fc5448d2/downloads.js/buggy/toolkit/mozapps/downloads/content/downloads.js