(function($) {                                          // Compliant with jquery.noConflict()
$.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,
        direction:'rtl',
        imgpath: null,
        beforeStart: null,
        afterEnd: null
    }, o || {});

    return this.each(function() {                           // Returns the element collection. Chainable.

    	if (o.direction=="rtl") {
          sdalign = "right";
          sdralign = "left";	
        }
        else {
          sdalign = "left";
          sdralign = "right";	
        }
    	
        var running = false, animCss=o.vertical?"top":sdalign, sizeCss=o.vertical?"height":"width";
        var div = $(this), ul = $("ul", div), 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 li = $("li", ul), itemLength = li.size(), curr = o.start;
        div.css("visibility", "visible");

        li.css({overflow: "hidden", float: o.vertical ? "none" : sdalign});
        ul.css({margin: "0", padding: "0", position: "relative", "list-style-type": "none", "z-index": "1"});
        eval("div.css({overflow: \"hidden\", position: \"relative\", \"z-index\": \"2\", "+sdalign+": \"0px\"})");

        var liSize = o.vertical ? height(li) : width(li);   // Full li size(incl margin)-Used for animation
        var ulSize = liSize * itemLength;                   // size of full ul(total length, not just for the visible items)
        var divSize = liSize * v;                           // size of entire div(total length for just the visible items)

        li.css({width: li.width(), height: li.height()});
        ul.css(sizeCss, ulSize+"px").css(animCss, -(curr*liSize));

        div.css(sizeCss, divSize+"px");                     // Width of the DIV. length of visible images

        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, val) {
                $(val).click(function() {
                    return go(o.circular ? o.visible+i : i);
                });
            });

        if(o.mouseWheel && div.mousewheel)
            div.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 li.slice(curr).slice(0,v);
        };

        function go(to) {
            if(!running) {

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

                if(o.circular) {            // If circular we are in first or last, then goto the other end
                    if(to<=o.start-v-1) {           // If first, then goto last
                        ul.css(animCss, -((itemLength-(v*2))*liSize)+"px");
                        // If "scroll" > 1, then the "to" might not be equal to the condition; it can be lesser depending on the number of elements.
                        curr = to==o.start-v-1 ? itemLength-(v*2)-1 : itemLength-(v*2)-o.scroll;
                    } else if(to>=itemLength-v+1) { // If last, then goto first
                        ul.css(animCss, -( (v) * liSize ) + "px" );
                        // If "scroll" > 1, then the "to" might not be equal to the condition; it can be greater depending on the number of elements.
                        curr = to==itemLength-v+1 ? v+1 : v+o.scroll;
                    } else curr = to;
                } else {                    // If non-circular and to points to first or last, we just return.
                    if(to<0 || to>itemLength-v) return;
                    else curr = to;
                }                           // If neither overrides it, the curr will still be "to" and we can proceed.

                running = true;

                eval("ul.animate(animCss == sdalign ? { "+sdalign+": -(curr*liSize) } : { top: -(curr*liSize) } , o.speed, o.easing,function() {if(o.afterEnd)o.afterEnd.call(this, vis());running = false;});");
                // Disable buttons when the carousel reaches the last/first, and enable when not
                if(!o.circular) {
                    var bt1 = $(o.btnPrev);
                    bt1.attr("src",o.imgpath+'carousel_prev2.gif');
                    bt1[0].onmouseover = function(){this.src=o.imgpath+'carousel_prev3.gif'};
                    bt1[0].onmouseout = function(){this.src=o.imgpath+'carousel_prev2.gif'};
                    bt1.css("cursor","pointer");
                    var bt2 = $(o.btnNext);
                    bt2.attr("src",o.imgpath+'carousel_next2.gif');
                    bt2[0].onmouseover = function(){this.src=o.imgpath+'carousel_next3.gif'};
                    bt2[0].onmouseout = function(){this.src=o.imgpath+'carousel_next2.gif'};
                    bt2.css("cursor","pointer");

                    var nSbtn = $( (curr-o.scroll<0 && o.btnPrev)
                        ||
                       (curr+o.scroll > itemLength-v && o.btnNext)
                        ||
                       []
                     )
                     
                     if(nSbtn[0])
                     {
                       if (nSbtn[0].className=="next")	
                     	 nSbtn.attr("src",o.imgpath+'carousel_next1.gif');
                       else if (nSbtn[0].className=="prev")	
                     	 nSbtn.attr("src",o.imgpath+'carousel_prev1.gif');	
                     	 
                       nSbtn.removeAttr("onmouseover");
                       nSbtn.removeAttr("onmouseout");
                       nSbtn.css("cursor","");	 
                     }
                }

            }
            return false;
        };
    });
};

function css(el, prop) {
    return parseInt($.css(el[0], prop)) || 0;
};
function width(el) {
    return  el[0].offsetWidth + css(el, 'margin'+sdalign) + css(el, 'margin'+sdralign);
};
function height(el) {
    return el[0].offsetHeight + css(el, 'marginTop') + css(el, 'marginBottom');
};

})(jQuery);