js文件看不懂，大侠指点，万谢

这是一个叫resources.js的文件，其中的this.resources等不知引用是什么？

/*
 * 资源工厂，定义消息资源。
 * 在ResourceFactory_CreateInstance函数里定义每一个消息。
 *
 * $Id$
 */
function ResourceFactory() {
    this.resources = {};
    this.constants = {};
    this.getResource = ResourceFactory_GetResource;
    this.getConstant = ResourceFactory_GetConstant;
    this.createInstance = ResourceFactory_CreateInstance;
    this.init = ResourceFactory_Init;
}

function ResourceFactory_GetResource(name) {
    return this.resources[name] ? this.resources[name] : this.resources['hoo'];
}

function ResourceFactory_GetConstant(name) {
    return this.constants[name] ? this.constants[name] : this.constants['hoo'];
}

function ResourceFactory_CreateInstance() {
    this.resources['hoo'] = "内部错误";
    this.constants['hoo'] = "";
    this.init();
    return this;
}

function ResourceFactory_Init() {
    this.resources['WM_nowidget'] = "没有这个窗口部件对象：";
    this.resources['WM_nodesktop'] = "没有这个桌面对象：";
    this.resources['TM_confirm_switchchildtask'] = "当前任务正在运行，并且有未完成的子任务，不能关闭，请先处理子任务。\n现在切换到子任务吗？";
    this.resources['Timer_taskidconflicted'] = "定时任务ID冲突，该任务ID已使用。任务ID：";
    this.resources['MENU_confirmlogout'] = "您将退出本次登录重新登录系统，确认吗？";
    this.resources['MENU_confirmclose'] = "您将退出系统，确认吗？";
    this.resources['TP_notasktarget'] = "没有设定任务目标（url or formObj）。";
    this.resources['TP_invoketaskinitialize'] = "调用任务生命周期方法__taskInitialize出错：";
    this.resources['TP_invoketaskpresent'] = "调用任务生命周期方法__taskPresent出错：";
    this.resources['TP_invoketaskreactive'] = "调用任务生命周期方法__taskReactive出错：";
    this.resources['TP_invoketaskfinalize'] = "调用任务生命周期方法__taskFinalize出错：";
    this.resources['MessageInfoSuffix'] = " 条新消息";
    this.resources['WM_errorinitwidgets'] = "初始化界面失败，请检查screen-layout.xml配置，错误信息：";
    this.resources['WM_elementlayoutcallbackerror'] = "调用部件自定义Ajax脚本出错，请检查screen-layout.xml配置，错误信息：";
    this.resources['TM_closetaskerror'] = "关闭任务出错，请检查自定义回调方法或传入的linkage对象，错误信息：";

    this.constants['default_task_icon'] = "ui/images/www7.gif";
    this.constants['default_loading_page'] = "ui/loading.jsp";
    this.constants['logout_method'] = "/login.do?method=logout";
}