(function($) {

    $.fn.jCarouselLite = function(o) {

        o = $.extend({

            btnPrev: null,

            btnNext: null,

            btnGo: null,

            mouseWheel: false,

            auto: null,

            speed: 8000,

            easing: null,

            vertical: false,

            circular: true,

            visible: 0,

            start: 0,

            scroll: 1,

            beforeStart: null,

            afterEnd: null

        }, o || {});

        return this.each(function() {

            var b = false,

            animCss = o.vertical ? "top": "left",

            sizeCss = o.vertical ? "height": "width";

            var c = $(this),

            ul = $("ul", c),

            tLi = $("li", ul),

            tl = tLi.size(),

            v = o.visible;

            if (o.circular) {

                ul.prepend(tLi.slice(tl - v - 1 + 1).clone()).append(tLi.slice(0, v).clone());

                o.start += v

            }

            var f = $("li", ul),

            itemLength = f.size(),

            curr = o.start;

            c.css("visibility", "visible");

            f.css({

                overflow: "hidden",

                float: o.vertical ? "none": "left"

            });

            ul.css({

                margin: "0",

                padding: "0",

                position: "relative",

                "list-style-type": "none",

                "z-index": "1"

            });

            c.css({

                overflow: "hidden",

                position: "relative",

                "z-index": "2",

                left: "0px"

            });

            var g = o.vertical ? height(f) : width(f);

            var h = g * itemLength;

            var j = g * v;

            f.css({

                width: f.width(),

                height: f.height()

                });

            ul.css(sizeCss, h + "px").css(animCss, -(curr * g));

            c.css(sizeCss, j + "px");

            if (o.btnPrev)

                $(o.btnPrev).click(function() {

                return go(curr - o.scroll)

                });

            if (o.btnNext)

                $(o.btnNext).click(function() {

                return go(curr + o.scroll)

                });

            if (o.btnGo)

                $.each(o.btnGo, function(i, a) {

                $(a).click(function() {

                    return go(o.circular ? o.visible + i: i)

                    })

                });

            if (o.mouseWheel && c.mousewheel)

                c.mousewheel(function(e, d) {

                return d > 0 ? go(curr - o.scroll) : go(curr + o.scroll)

                });

            if (o.auto)

                setInterval(function() {

                go(curr + o.scroll)

                }, o.auto + o.speed);

            function vis() {

                return f.slice(curr).slice(0, v)

                };

            function go(a) {

                if (!b) {

                    if (o.beforeStart)

                        o.beforeStart.call(this, vis());

                    if (o.circular) {

                        if (a <= o.start - v - 1) {

                            ul.css(animCss, -((itemLength - (v * 2)) * g) + "px");

                            curr = a == o.start - v - 1 ? itemLength - (v * 2) - 1: itemLength - (v * 2) - o.scroll

                        } else if (a >= itemLength - v + 1) {

                            ul.css(animCss, -((v) * g) + "px");

                            curr = a == itemLength - v + 1 ? v + 1: v + o.scroll

                        } else

                            curr = a

                    } else {

                        if (a < 0 || a > itemLength - v)

                            return;

                        else

                            curr = a

                    }

                    b = true;

                    ul.animate(animCss == "left" ? {

                        left: -(curr * g)

                        }: {

                        top: -(curr * g)

                        }, o.speed, o.easing, function() {

                        if (o.afterEnd)

                            o.afterEnd.call(this, vis());

                        b = false

                    });

                    if (!o.circular) {

                        $(o.btnPrev + "," + o.btnNext).removeClass("disabled");

                        $((curr - o.scroll < 0 && o.btnPrev) || (curr + o.scroll > itemLength - v && o.btnNext) || []).addClass("disabled")

                        }

                }

                return false

            }

        })

        };

    function css(a, b) {

        return parseInt($.css(a[0], b)) || 0

    };

    function width(a) {

        return a[0].offsetWidth + css(a, 'marginLeft') + css(a, 'marginRight')

        };

    function height(a) {

        return a[0].offsetHeight + css(a, 'marginTop') + css(a, 'marginBottom')

        }

})(jQuery);