function scroller() {

                $("#scr div:first-child").animate(

                    { marginLeft:-$('#scr div:first-child').width() },

                    21*$('#scr div:first-child').width(), 'linear',

                    function () {

                        var curimg = $('#scr div:first-child');

                        $('#scr div:first-child').remove();

                        curimg.css('margin-left','0');

                        curimg.appendTo("#scr");

                        scroller();

                    }

                );