(function ($) {
	$.fn.jCarouselLite = function (o) {
		o = $.extend({
			btnPrev: null,
			btnNext: null,
			btnPause: null,
			btnGo: null,
			mouseWheel: false,
			auto: null,
			speed: 200,
			easing: null,
			vertical: false,
			circular: true,
			visible: 3,
			start: 0,
			scroll: 1,
			pauseOnHover: false,
			beforeStart: null,
			afterEnd: null
		}, o || {});
		return this.each(function () {
			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,
			paused = 0;
			if (o.circular) {
				ul.prepend(tLi.slice(tl - v - 1 + 1).clone()).append(tLi.slice(0, v).clone());
				o.start += v
			}

			o.pauseOnHover ? ul.hover(function () {
				paused = 1
			}, function () {
				paused = 0
			}) : "";
			var li = $("li", ul),
			itemLength = li.size(),
			curr = o.start;
			div.css("visibility", "visible");
			li.css({
				overflow: "hidden",
				"float": o.vertical ? "none" : "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 = o.vertical ? height(li) : width(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 () {
					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)
			}

			if (o.btnPause) {
				$(o.btnPause).click(function () {
					if (paused == 1) {
						paused = 0;
						$(this).removeClass();
					} else {
						paused = 1;
						$(this).addClass('pause');
					}

					return false;
				});
			}

			function vis() {
				return li.slice(curr).slice(0, v)
			}
			function go(to) {
				if (!running && !paused) {
					if (o.beforeStart) {
						o.beforeStart.call(this, vis())
					}
					if (o.circular) {
						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
							}
						}
					} else {
						if (to < 0 || to > itemLength - v) {
							return
						} else {
							curr = to
						}
					}
					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 (!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);