(function($) {
$.fn.jCarouselLite = function(o) {
    o = $.extend({
        btnPrev: null,
        btnNext: null,
        btnGo: null,
        auto: null,
        speed: 200,
        visible: 3,
        start: 0,
        scroll: 1,
        beforeStart: null,
        afterEnd: null
    }, o || {});
    return this.each(function() {
		var sint;
        var running = false, animCss="left", sizeCss="width";
        var div = $(this), ul = $("ul", div), tLi = $("li", ul), tl = tLi.size(), v = o.visible;
        ul.prepend(tLi.slice(tl-v-1+1).clone())
        .append(tLi.slice(0,v).clone());
        o.start += v;
        var li = $("li", ul), itemLength = li.size(), curr = o.start;
        div.css("visibility", "visible");
        li.css({overflow: "hidden", float: "left"});
        ul.css({margin: "0", padding: "0", position: "relative", "list-style-type": "none", "z-index": "1"});
        div.css({overflow: "hidden", position: "relative", "z-index": "2", left: "0px"});
        var liSize = cwidth(li);
        var ulSize = liSize * itemLength;
        var divSize = liSize * v;
        li.css({width: li.width(), height: li.height()});
        ul.css(sizeCss, ulSize+"px").css(animCss, -(curr*liSize));
        div.css(sizeCss, divSize+"px");
        if(o.btnPrev)
            $(o.btnPrev).click(function() {
				if(o.auto) {
					clearInterval(sint);
					fnsint();
				}
                return go(curr-o.scroll);
            });
        if(o.btnNext)
            $(o.btnNext).click(function() {
				if(o.auto) {
					clearInterval(sint);
					fnsint();
				}
                return go(curr+o.scroll);
            });
        if(o.btnGo)
            $.each(o.btnGo, function(i, val) {
                $(val).click(function() {
                    return go(o.visible+i);
                });
            });
        if(o.auto)
			fnsint();
        function vis() {
            return li.slice(curr).slice(0,v);
        };
        function fnsint() {
            sint = setInterval(function() {
                go(curr+o.scroll);
            }, o.auto+o.speed);
        };
        function go(to) {
            if(!running) {
                if(o.beforeStart)
                    o.beforeStart.call(this, vis());
                if(to<=o.start-v-1) {
                    ul.css(animCss, -((itemLength-(v*2))*liSize)+"px");
                    curr = to==o.start-v-1 ? itemLength-(v*2)-1 : itemLength-(v*2)-o.scroll;
                } else if(to>=itemLength-v+1) {
                    ul.css(animCss, -( (v) * liSize ) + "px" );
                    curr = to==itemLength-v+1 ? v+1 : v+o.scroll;
                } else curr = to;
                running = true;
                ul.animate(
                    animCss == "left" ? { left: -(curr*liSize) } : { top: -(curr*liSize) } , o.speed,
                    function() {
                        if(o.afterEnd)
                            o.afterEnd.call(this, vis());
                        running = false;
                    }
                );
            }
            return false;
        };
    });
};
function css(el, prop) {
    return parseInt($.css(el[0], prop)) || 0;
};
function cwidth(el) {
	try
	{
		return  el[0].offsetWidth + css(el, 'marginLeft') + css(el, 'marginRight');
	}
	catch (e){
		return null;
	}
};
function height(el) {
    return el[0].offsetHeight + css(el, 'marginTop') + css(el, 'marginBottom');
};
})(jQuery);