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$(document).ready(function(){  
    function scrollToAnchor(aid){
        var aTag = $(aid);
            $('html,body').animate({scrollTop: aTag.offset().top},'slow');
        }

        $(".scroll a").click(function(e) {
            e.preventDefault();
            var id = $(this).attr("href");
            scrollToAnchor(id);
    });
});