; (function ($) {
    $(window).load(function () {
        window.loaded = 1;
    });

    $.windowLoaded = function (fn) {
        var windowLoadedFn = window.loaded ?
          (function (fn) { fn.call(window); }) : // the window has already loaded
          (function (fn) { $(window).load(fn); }); // the window hasn't loaded

        windowLoadedFn(fn);
    };
})(jQuery);