Fixing fixed navbar and anchors problem

gistfile1.js

(function() {
    var waitTillJQuery=function() {
        if(window.jQuery) {
            var $=window.jQuery;
            // make sure navbar is taken into account
            var scrollToRightPlace=function() {
                if($(".navbar-fixed-top").length) {
                    var navheight=$(".navbar-fixed-top").outerHeight(true);
                    var selector=window.location.hash;
                    if(!selector) return;
                    var offset=$(selector).offset();
                    // 30 is an arbitrary fudge factor so it doesn't
                    // end up starting exactly at the bottom of the
                    // navbar
                    window.scrollTo(offset.left, offset.top-navheight-30);
                }
            };
            $(window).on("load hashchange", scrollToRightPlace);
            // immediate run
            scrollToRightPlace();
        } else setTimeout(waitTillJQuery, 50);
    };
    waitTillJQuery();
})();