jquery-jetpacksdk.js

    // Install jQuery in each XUL window namespace
    var wu = require("window-utils");
    var module = require("securable-module");

    var windowtracker = new wu.WindowTracker({
        onTrack: function (window) {
            var namespace = {
                window: window,
                document: window.document,
                location: window.location,
                navigator: window.navigator
            };
            var loader = new module.Loader({rootPath: __url__,
                                            globals: namespace,
                                            defaultPrincipal: "system"});
            loader.require("jquery");
        },
        onUntrack: function (window) {}
    });