(function($){
    $.fn.jCarouselLite=function(o){
        o=$.extend({
            btnPrev:null,
            btnNext:null,
            btnGo:null,
            mouseWheel:false,
            auto:null,
            speed:200,
            easing:null,
            vertical:false,
            circular:true,
            visible:3,
            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:"20px"
            });
            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);