Cc = Components.classes;
Ci = Components.interfaces;
Cr = Components.results;
Cu = Components.utils;
loader = Cc["@mozilla.org/moz/jssubscript-loader;1"].getService(Ci.mozIJSSubScriptLoader);
load = function(fileURI, moduleScope) {
  try {
    loader.loadSubScript(fileURI, moduleScope);
  } catch (e) {
    throw({name: "LoadError", message: "Failed to load " + fileURI + ": " + e.message});
  }
};

print = dump;
puts = function(str) { print(str + "\n"); };