// JavaScript Document


(function($) {
        $.extend($.fx.step,{
            backgroundPosition: function(fx) {
            if (fx.state === 0 && typeof fx.end == 'string') {
                var start = $.curCSS(fx.elem,'backgroundPosition');
                start = toArray(start);
                fx.start = [start[0],start[2]];
                var end = toArray(fx.end);
                fx.end = [end[0],end[2]];
                fx.unit = [end[1],end[3]];
                        }
            var nowPosX = [];
            nowPosX[0] = ((fx.end[0] - fx.start[0]) * fx.pos) + fx.start[0] + fx.unit[0];
            nowPosX[1] = ((fx.end[1] - fx.start[1]) * fx.pos) + fx.start[1] + fx.unit[1];
            fx.elem.style.backgroundPosition = nowPosX[0]+' '+nowPosX[1];

           function toArray(strg){
               strg = strg.replace(/left|top/g,'0px');
               strg = strg.replace(/right|bottom/g,'100%');
               strg = strg.replace(/([0-9\.]+)(\s|\)|$)/g,"$1px$2");
               var res = strg.match(/(-?[0-9\.]+)(px|\%|em|pt)\s(-?[0-9\.]+)(px|\%|em|pt)/);
               return [parseFloat(res[1],10),res[2],parseFloat(res[3],10),res[4]];
           }
        }
        });
})(jQuery);

    $(document).ready(function() {
        $("#fader li:not(:first)").hide();
        $('#fader li:visible').animate({backgroundPosition: '(0px -200px)'},{duration: 7000});
        setTimeout(showNextImg, 10000);
      });               
 
 function showNextImg(){
         var vis = $('#fader li:visible'); // we'll call this VISIBLE
         if ( vis.next().length ){ nextSlide = vis.next(); }
         else {nextSlide = vis.parent().children(':first');}
         
         nextSlide.css({'z-index':2, backgroundPosition:'0 0'}).fadeIn(1000); // fade in li after VISIBLE
         vis.css({'z-index':1}).fadeOut(1000) ; // return to VISIBLE and fade it out-it's no longer visible, but still in the same place in the DOM
         nextSlide.animate({backgroundPosition: '(0px -200px)'},{duration: 3000}); // animate position of li after VISIBLE
         
         setTimeout(showNextImg, 5000);
}