jQuery.fn.anchorAnimate = function (settings) {

    settings = jQuery.extend({
        speed: 500
    }, settings);

    var scrollFn = function () { // added
        $('[href^=#]').removeClass('active');
        $(window).unbind('scroll', scrollFn);
    }

    return this.each(function () {
        var caller = this
        $(caller).click(function (event) {
            event.preventDefault()
            var locationHref = window.location.href
            var elementClick = $(caller).attr("href")

            var destination = $(elementClick).offset().top;
            $("html:not(:animated),body:not(:animated)").animate({ scrollTop: destination }, settings.speed, 'easeOutCubic', function () {
                window.location.hash = elementClick
                $('[href^=#]').removeClass('active'); // added
                $('[href^=' + elementClick + ']').addClass('active'); // added
                $('span.contact').removeClass('active');
                $('div#contactwindow').slideUp({
					easing: 'easeOutCubic',
					duration: 500
				});
                $(window).scroll(scrollFn); // added
            });
            return false;
        })
    })
}