(function($) {                                          // Compliant with jquery.noConflict()
$.fn.jCarouselLite = function(o) {
    o = $.extend({
        btnPrev: null,
        btnNext: null,
        btnGo: null,
        mouseWheel: false,
        auto: null,
        hoverPause: false,

        speed: 200,
        easing: null,

        vertical: false,
        circular: true,
        visible: 3,
        start: 0,
        scroll: 1,

        beforeStart: null,
        afterEnd: null
    }, o || {});

	// DEFAULT VARS FOR STYLE
	var zIndexSet = 20, opacitySet = 0.25, topSet = -10, leftSet = 15;

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

        var running = false, animCss=o.vertical?"top":"left", 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).clone())
              .append(tLi.slice(0,o.scroll).clone());
            o.start += v-1;
        }

        var li = $("li", ul), itemLength = li.size(), curr = o.start;
        div.css("visibility", "visible");

        li.css({overflow: "hidden", float: o.vertical ? "none" : "left", opacity: "0.25"});
        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 j = 0;
		for (var i=v-1; i<(v+v-1); i++)
		{
			if (j==0) {
				$(li[i]).children('span').fadeIn();
				$('#slide'+(j+1)).addClass('active');
			}
			$(li[i]).css('zIndex', zIndexSet-j);
			$(li[i]).animate({
					opacity: 1-(j*opacitySet),
					top: j*topSet,
					left: (j++)*leftSet
			});
		}
		
        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)-(((v-1)*topSet)*-1);     // 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.hoverPause) {
                $(o.btnPrev).hover(function(){stopAuto();}, function(){startAuto();});
            }
        }

        if(o.btnNext) {
            $(o.btnNext).click(function() {
                return go(curr+o.scroll);
            });
            if(o.hoverPause) {
                $(o.btnNext).hover(function(){stopAuto();}, function(){startAuto();});
            }
        }

        if(o.btnGo)
            $.each(o.btnGo, function(i, val) {
                $(val).click(function() {
					var j = parseInt($(this).attr('class'));
					
					var new_slide = j+1;
					if (new_slide > tl)
						new_slide = 1;

					return go(new_slide);			
				});
            });

        if(o.mouseWheel && div.mousewheel)
            div.mousewheel(function(e, d) {
                return d>0 ? go(curr-o.scroll) : go(curr+o.scroll);
            });

        var autoInterval;
		
        function startAuto() {
          stopAuto();
          autoInterval = setInterval(function() {
                  go(curr+o.scroll);
              }, o.auto+o.speed);
        };

        function stopAuto() {
            clearInterval(autoInterval);
        };
		
        if(o.auto) {
            if(o.hoverPause) {
                div.hover(function(){stopAuto();}, function(){startAuto();});
            }
            startAuto();
        };

        function vis() {
            return li.slice(curr).slice(0,v);
        };

		function correct(v) {
			var i = 1;
			$("#desc"+itemLength-v).css({opacity: 1-(i*opacitySet), left: (i*leftSet)+"px", top: (i*topSet)+"px", zIndex: (i*zIndexSet)});
			for (i; i<v; i++)
				$("#desc"+i).css({opacity: 1-((i+1)*opacitySet), left: ((i+1)*leftSet)+"px", top: ((i+1)*topSet)+"px", zIndex: ((i+1)*zIndexSet)});
			$('.slideShow').cycle(itemLength-v-1);
			$('.numberOfSlides div').removeClass('active');	
			$('#slide'+(itemLength-v)).addClass('active');
		}

        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<0) {           // If before range, then go around
                        ul.css(animCss, -( (curr + tl) * liSize)+"px");
                        curr = to + tl;
                    } else if(to>itemLength-v) { // If beyond range, then come around
						correct(v);
                        ul.css(animCss, -( (curr - tl) * liSize ) + "px" );
                        curr = to - tl;
                    } 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;

                ul.animate(
                    animCss == "left" ? { left: -(curr*liSize) } : { top: -(curr*liSize) } , o.speed, o.easing,
                    function() {
                        if(o.afterEnd)
                            o.afterEnd.call(this, vis());
                        running = false;
                    }
                );
							
				if (curr-2 > -1)
				{
					$('.slideShow').cycle(curr-2);
					$('.numberOfSlides div').removeClass('active');					
					$('#slide'+(curr-1)).addClass('active');
				}
				else if (curr == 1)
				{
					$('.slideShow').cycle(tl-1);
					$('.numberOfSlides div').removeClass('active');					
					$('#slide'+(tl)).addClass('active');
					
				}
				
				for (var i=0; i<v; i++)
				{
					$(li[curr+i]).css('zIndex',zIndexSet-i);
					$(li[curr+i]).animate({
							opacity: 1-(i*opacitySet),
							left: i*leftSet,
							top: i*topSet
					});
					if (i==0) {
						$(li[curr+i]).children('span').fadeIn()
					} else {
						$(li[curr+i]).children('span').fadeOut();
					}
				}

				for (var i=3; i<itemLength; i++)
				{
					$(li[curr+i]).css('zIndex',zIndexSet-v);
					$(li[curr+i]).animate({
							opacity: 0,
							left: v*leftSet,
							top: v*topSet
					});	
				}
				
                // Disable buttons when the carousel reaches the last/first, and enable when not
                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(el, prop) {
    return parseInt($.css(el[0], prop)) || 0;
};
function width(el) {
    return  el[0].offsetWidth + css(el, 'marginLeft') + css(el, 'marginRight');
};
function height(el) {
    return el[0].offsetHeight + css(el, 'marginTop') + css(el, 'marginBottom');
};

})(jQuery);