Ubiquity command for opening Notepad application from Firefox (on Windows only)

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CmdUtils.CreateCommand({
    author: { name: "Aman Bhatia", email: "amanatiitATgmail.com"},
    license: "MPL",
    description: _("Opens Notepad. Currently works with Windows only"),
    name: ['notepad', 'notes'],
    arguments: [],
    execute: function(args) {
      var process = Components.classes["@mozilla.org/process/util;1"].createInstance(Components.interfaces.nsIProcess);
      var path =  "c:\\windows\\notepad.exe";
      var args =  path.split(" ");
      var executable = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
      executable.followLinks = true;
      executable.initWithPath(path);
      
      if (executable.exists() && executable.isExecutable()) {
        process.init(executable);
        args.splice(0,1);
        process.run(false, args , args.length);
      } else {
        displayMessage(args[0] + ' is not an executable');
      }
    },

    preview: function(pblock, args) {
      
      s = _("Opens Windows Notepad.") + "<br>";
      pblock.innerHTML = CmdUtils.renderTemplate(s);
    }
})