var l = section;
    var m;
    var g;
    var c = 1;
    
    function naviimg_on(n){
        window.clearTimeout(m);
        if(l != n){
            stop();
            $('#img-'+l).fadeOut(300);
            $('#img-'+n).fadeIn(300);
            //$('#img-'+n).hide();
            l = n;
        }
    }
    
    function naviimg_off(){
        m = window.setTimeout("naviimg_on('"+section+"')", 1000);
    }
    
    $(document).ready(function () {
        $(window).scroll(function (event) {
            var y = $(this).scrollTop();
            var top = 400;
            if (y >= top) {
                $('#right').addClass('fixed');
            } else {
                $('#right').removeClass('fixed');
            }
        });
    });