Promises are awesome

gistfile1.js

	var getHtml = function (lang, pageId)
	{
		var promise = Q.ninvoke(fs, "readFile", getFn(lang, pageId), UTF);

		var onFailure = (lang == defaultLang
			? Q.reject
			: function () { return getHtml(defaultLang, pageId); });

		return promise.then(Q.resolve, onFailure);
	};