(function($) {
	var carouselevo = function(element, options) {
			var settings = $.extend({}, $.fn.carousel.defaults, options),
				self = this,
				element = $(element),
				carousel = element.children('.slides');
			carousel.children('div').addclass('slideitem');
			var slideitems = carousel.children('.slideitem'),
				slideimage = slideitems.find('img'),
				currentslide = 0,
				targetslide = 0,
				numberslides = slideitems.length,
				isanimationrunning = false,
				pause = true;
			videos = {
				youtube: {
					reg: /youtube\.com\/watch/i,
					split: '=',
					index: 1,
					url: 'http://www.youtube.com/embed/%id%?autoplay=1&fs=1rel=0'
				},
				vimeo: {
					reg: /vimeo\.com/i,
					split: '/',
					index: 3,
					url: 'http://player.vimeo.com/video/%id%?portrait=0&autoplay=1'
				}
			};
			this.current = currentslide;
			this.length = numberslides;
			this.init = function() {
				var o = settings;
				initslides();
				if (o.directionnav == true) {
					initdirectionbutton();
				}
				if (o.buttonnav != 'none') {
					initbuttonnav();
				}
				if (o.reflection == true) {
					initreflection();
				}
				if (o.shadow == true) {
					initshadow();
				}
				if (o.description == true) {
					initdesc();
				}
				if (o.autoplay == true) {
					runautoplay();
				}
				initvideo();
			};
			var setimagesize = function(p) {
					var o = settings,
						n = numberslides,
						w = o.frontwidth,
						h = o.frontheight,
						ret;
					if (p != 0) {
						if (o.halign == 'center') {
							if (p > 0 && p <= math.ceil((n - 1) / 2)) {
								var front = setimagesize(p - 1);
								w = o.backzoom * front.width;
								h = o.backzoom * front.height;
							} else {
								var sz = setimagesize(n - p);
								w = sz.width;
								h = sz.height;
							}
						} else {
							if (p == (n - 1)) {
								w = o.frontwidth / o.backzoom;
								h = o.frontheight / o.backzoom;
							} else {
								var front = setimagesize(p - 1);
								w = o.backzoom * front.width;
								h = o.backzoom * front.height;
							}
						}
					}
					return ret = {
						width: w,
						height: h
					};
				};
			var setslidesize = function(p) {
					var o = settings,
						n = numberslides,
						w = o.frontwidth,
						h = o.frontheight + reflectionheight(p) + shadowheight(p),
						ret;
					if (p != 0) {
						if (o.halign == 'center') {
							if (p > 0 && p <= math.ceil((n - 1) / 2)) {
								var front = setimagesize(p - 1);
								w = o.backzoom * front.width;
								h = (o.backzoom * front.height) + reflectionheight(p) + shadowheight(p);
							} else {
								var sz = setslidesize(n - p);
								w = sz.width;
								h = sz.height;
							}
						} else {
							if (p == (n - 1)) {
								w = o.frontwidth / o.backzoom;
								h = (o.frontheight / o.backzoom) + reflectionheight(p) + shadowheight(p);
							} else {
								var front = setimagesize(p - 1);
								w = o.backzoom * front.width;
								h = (o.backzoom * front.height) + reflectionheight(p) + shadowheight(p);
							}
						}
					}
					return ret = {
						width: w,
						height: h
					};
				};
			var getmargin = function(p) {
					var o = settings,
						vm, hm, ret, iz = setimagesize(p);
					vm = iz.height * o.vmargin;
					hm = iz.width * o.hmargin;
					return ret = {
						vmargin: vm,
						hmargin: hm
					};
				};
			var centerpos = function(p) {
					var o = settings,
						c = toppos(p - 1) + (setimagesize(p - 1).height - setimagesize(p).height) / 2;
					if (o.halign != 'center') {
						if (p == (numberslides - 1)) {
							c = o.top - ((setimagesize(p).height - setimagesize(0).height) / 2);
						}
					}
					return c;
				};
			var toppos = function(p) {
					var o = settings,
						t = o.top,
						vm = getmargin(p).vmargin;
					if (o.valign == 'bottom') {
						t = o.bottom;
					}
					if (p != 0) {
						if (o.halign == 'center') {
							if (p > 0 && p <= math.ceil((numberslides - 1) / 2)) {
								if (o.valign == 'center') {
									t = centerpos(p);
								} else {
									t = centerpos(p) + vm;
								}
							} else {
								t = toppos(numberslides - p);
							}
						} else {
							if (p == (numberslides - 1)) {
								if (o.valign == 'center') {
									t = centerpos(p);
								} else {
									t = centerpos(p) - vm;
								}
							} else {
								if (o.valign == 'center') {
									t = centerpos(p);
								} else {
									t = centerpos(p) + vm;
								}
							}
						}
					}
					return t;
				};
			var horizonpos = function(p) {
					var o = settings,
						n = numberslides,
						hpos, mod = n % 2,
						endslide = n / 2,
						hm = getmargin(p).hmargin;
					if (p == 0) {
						if (o.halign == 'center') {
							hpos = (o.carouselwidth - o.frontwidth) / 2;
						} else {
							hpos = o.left;
							if (o.halign == 'right') {
								hpos = o.right;
							}
						}
					} else {
						if (o.halign == 'center') {
							if (p > 0 && p <= math.ceil((n - 1) / 2)) {
								hpos = horizonpos(p - 1) - hm;
								if (mod == 0) {
									if (p == endslide) {
										hpos = (o.carouselwidth - setslidesize(p).width) / 2;
									}
								}
							} else {
								hpos = o.carouselwidth - horizonpos(n - p) - setslidesize(p).width;
							}
						} else {
							if (p == (n - 1)) {
								hpos = horizonpos(0) - (setslidesize(p).width - setslidesize(0).width) / 2 - hm;
							} else {
								hpos = horizonpos(p - 1) + (setslidesize(p - 1).width - setslidesize(p).width) / 2 + hm;
							}
						}
					}
					return hpos;
				};
			var setopacity = function(p) {
					var o = settings,
						n = numberslides,
						opc = 1,
						hiddenslide = n - o.slidesperscroll;
					if (hiddenslide < 2) {
						hiddenslide = 2;
					}
					if (o.halign == 'center') {
						var s1 = (n - 1) / 2,
							hs2 = hiddenslide / 2,
							lastslide1 = (s1 + 1) - hs2,
							lastslide2 = s1 + hs2;
						if (p == 0) {
							opc = 1;
						} else {
							opc = o.backopacity;
							if (p >= lastslide1 && p <= lastslide2) {
								opc = 0;
							}
						}
					} else {
						if (p == 0) {
							opc = 1;
						} else {
							opc = o.backopacity;
							if (!(p < (n - hiddenslide))) {
								opc = 0;
							}
						}
					}
					return opc;
				};
			var setslideposition = function(p) {
					var pos = new array(),
						o = settings,
						n = numberslides;
					for (var i = 0; i < n; i++) {
						var sz = setslidesize(i);
						if (o.halign == 'left') {
							pos[i] = {
								width: sz.width,
								height: sz.height,
								top: toppos(i),
								left: horizonpos(i),
								opacity: setopacity(i)
							};
							if (o.valign == 'bottom') {
								pos[i] = {
									width: sz.width,
									height: sz.height,
									bottom: toppos(i),
									left: horizonpos(i),
									opacity: setopacity(i)
								};
							}
						} else {
							pos[i] = {
								width: sz.width,
								height: sz.height,
								top: toppos(i),
								right: horizonpos(i),
								opacity: setopacity(i)
							};
							if (o.valign == 'bottom') {
								pos[i] = {
									width: sz.width,
									height: sz.height,
									bottom: toppos(i),
									right: horizonpos(i),
									opacity: setopacity(i)
								};
							}
						}
					}
					return pos[p];
				};
			var slidepos = function(i) {
					var cs = currentslide,
						pos = i - cs;
					if (i < cs) {
						pos += numberslides;
					}
					return pos;
				};
			var zindex = function(i) {
					var z, n = numberslides,
						halign = settings.halign;
					if (halign == 'left' || halign == 'right') {
						if (i == (n - 1)) {
							z = n - 1;
						} else {
							z = n - (2 + i);
						}
					} else {
						if (i >= 0 && i <= ((n - 1) / 2)) {
							z = (n - 1) - i;
						} else {
							z = i - 1;
						}
					}
					return z;
				};
			var slidesmouseover = function(event) {
					var o = settings;
					if (o.autoplay == true && o.pauseonhover == true) {
						stopautoplay();
					}
				};
			var slidesmouseout = function(event) {
					var o = settings;
					if (o.autoplay == true && o.pauseonhover == true) {
						if (pause == true) {
							runautoplay();
						}
					}
				};
			var initslides = function() {
					var o = settings,
						n = numberslides,
						images = slideimage;
					carousel.css({
						'width': o.carouselwidth + 'px',
						'height': o.carouselheight + 'px'
					}).bind('mouseover', slidesmouseover).bind('mouseout', slidesmouseout);
					for (var i = 0; i < n; i++) {
						var item = slideitems.eq(i);
						item.css(setslideposition(slidepos(i))).bind('click', slideclick);
						slideitems.eq(slidepos(i)).css({
							'z-index': zindex(i)
						}).attr("id","side"+i);//dong
						images.eq(i).css(setimagesize(slidepos(i)));
						var op = item.css('opacity');
						if (op == 0) {
							item.hide();
						} else {
							item.show();
						}
					}
					if (o.mouse == true) {
						carousel.mousewheel(function(event, delta) {
							if (delta > 0) {
								goto(currentslide - 1, true, false);
								return false;
							} else if (delta < 0) {
								goto(currentslide + 1, true, false);
								return false;
							}
						});
					}
				};
			var hideitem = function(slide) {
					var op = slide.css('opacity');
					if (op == 0) {
						slide.hide();
					}
				};
			var goto = function(index, isstopautoplay, ispause) {
					if (isanimationrunning == true) {
						return;
					}
					var o = settings,
						n = numberslides;
					if (isstopautoplay == true) {
						stopautoplay();
					}
					targetslide = index;
					if (targetslide == n) {
						targetslide = 0;
					}
					if (targetslide == -1) {
						targetslide = n - 1;
					}
					o.before(self);
					animateslide();
					pause = ispause;
				};
			var animateslide = function() {
					var o = settings,
						n = numberslides;
					if (isanimationrunning == true) {
						return;
					}
					if (currentslide == targetslide) {
						isanimationrunning = false;
						return;
					}
					isanimationrunning = true;
					hidedesc(currentslide);
					if (currentslide > targetslide) {
						var forward = n - currentslide + targetslide,
							backward = currentslide - targetslide;
					} else {
						var forward = targetslide - currentslide,
							backward = currentslide + n - targetslide;
					}
					if (forward > backward) {
						dir = -1;
					} else {
						dir = 1;
					}
					currentslide += dir;
					if (currentslide == n) {
						currentslide = 0;
					}
					if (currentslide == -1) {
						currentslide = n - 1;
					}
					hidevideooverlay();
					buttonnavstate();
					showdesc(currentslide);
					for (var i = 0; i < n; i++) {
						animateimage(i);
					}
				};
			var animateimage = function(i) {
					var o = settings,
						item = slideitems.eq(i),
						pos = slidepos(i);
					item.show();
					item.animate(setslideposition(pos), o.speed, 'linear', function() {
						hideitem($(this));
						if (i == numberslides - 1) {
							isanimationrunning = false;
							if (currentslide != targetslide) {
								animateslide();
							} else {
								self.current = currentslide;
								showvideooverlay(currentslide);
								o.after(self);
							}
						}
					});
					item.css({
						'z-index': zindex(pos)
					}).attr("id","side"+pos);//dong
					slideimage.eq(i).animate(setimagesize(pos), o.speed, 'linear');
					if (o.reflection == true) {
						animatereflection(o, item, i);
					}
					if (o.shadow == true) {
						animateshadow(o, item, i);
					}
				};
			var slideclick = function(event) {
					var $this = $(this);
					if ($this.index() != currentslide) {
						goto($this.index(), true, false);
						return false;
					}
				};
			var reflectionheight = function(p) {
					var h = 0,
						o = settings;
					if (o.reflection == true) {
						h = o.reflectionheight * setimagesize(p).height;
					}
					return h;
				};
			var initreflection = function() {
					var o = settings,
						items = slideitems,
						images = slideimage,
						n = numberslides,
						opc = o.reflectionopacity,
						start = 'rgba(' + o.reflectioncolor + ',' + opc + ')',
						end = 'rgba(' + o.reflectioncolor + ',1)';
					var style = '<style type="text/css">';
					style += '.slideitem .gradient {';
					style += 'position:absolute; left:0; top:0; margin:0; padding:0; border:none; width:100%; height:100%; ';
					style += 'background: -moz-linear-gradient(' + start + ',' + end + '); ';
					style += 'background: -o-linear-gradient(' + start + ',' + end + '); ';
					style += 'background: -webkit-linear-gradient(' + start + ',' + end + '); ';
					style += 'background: -webkit-gradient(linear, 0% 0%, 0% 100%, from(' + start + '), to(' + end + ')); ';
					style += 'background: linear-gradient(' + start + ',' + end + '); ';
					style += '} ';
					style += '.slideitem .reflection {';
					style += 'filter: progid:dximagetransform.microsoft.alpha(style=1,opacity=' + (opc * 100) + ',finishopacity=0,startx=0,finishx=0,starty=0,finishy=100)';
					style += '-ms-filter: progid:dximagetransform.microsoft.alpha(style=1,opacity=' + (opc * 100) + ',finishopacity=0,startx=0,finishx=0,starty=0,finishy=100)';
					style += '}';
					style += '</style>';
					$(style).appendto('head');
					for (var i = 0; i < n; i++) {
						var src = images.eq(i).attr('src'),
							sz = setimagesize(i);
						$('<div class="reflection"></div>').css({
							'position': 'absolute',
							'margin': '0',
							'padding': '0',
							'border': 'none',
							'overflow': 'hidden',
							'left': '0',
							'top': setimagesize(i).height + 'px',
							'width': '100%',
							'height': reflectionheight(i)
						}).appendto(items.eq(i)).append($('<img src="' + src + '" />').css({
							'width': sz.width + 'px',
							'height': sz.height + 'px',
							'left': '0',
							'margin': '0',
							'padding': '0',
							'border': 'none',
							'-moz-transform': 'rotate(180deg) scale(-1,1)',
							'-webkit-transform': 'rotate(180deg) scale(-1,1)',
							'-o-transform': 'rotate(180deg) scale(-1,1)',
							'transform': 'rotate(180deg) scale(-1,1)',
							'filter': 'progid:dximagetransform.microsoft.basicimage(rotation=2, mirror=1)',
							'-ms-filter': 'progid:dximagetransform.microsoft.basicimage(rotation=2, mirror=1)'
						})).append('<div class="gradient"></div>');
					}
				};
			var animatereflection = function(option, item, i) {
					var ref = item.children('.reflection'),
						speed = option.speed,
						sz = setimagesize(slidepos(i));
					ref.animate({
						'top': sz.height + 'px',
						'height': reflectionheight(slidepos(i))
					}, speed, 'linear');
					ref.children('img').animate(sz, speed, 'linear');
				};
			var shadowheight = function(p) {
					var sh = 0;
					if (settings.shadow == true) {
						sh = 0.1 * setimagesize(p).height;
					}
					return sh;
				};
			var shadowmiddlewidth = function(p) {
					var w, s = slideitems.eq(p).find('.shadow'),
						sl = s.children('.shadowleft'),
						sr = s.children('.shadowright'),
						sm = s.children('.shadowmiddle');
					return w = setimagesize(p).width - (sl.width() + sr.width());
				};
			var initshadow = function() {
					var items = slideitems,
						n = numberslides,
						swidth = setimagesize(0).width,
						sinner = '<div class="shadowleft"></div><div class="shadowmiddle"></div><div class="shadowright"></div>';
					if (settings.halign != 'center') {
						swidth = setimagesize(n - 1).width;
					}
					for (var i = 0; i < n; i++) {
						var item = items.eq(i);
						$('<div class="shadow"></div>').css({
							'width': swidth + 'px',
							'z-index': '-1',
							'position': 'absolute',
							'margin': '0',
							'padding': '0',
							'border': 'none',
							'overflow': 'hidden',
							'left': '0',
							'bottom': '0'
						}).append(sinner).appendto(item).children('div').css({
							'position': 'relative',
							'float': 'left'
						});
						item.find('.shadow').children('.shadowmiddle').width(shadowmiddlewidth(i));
					}
				};
			var animateshadow = function(option, item, i) {
					item.find('.shadow').children('.shadowmiddle').animate({
						'width': shadowmiddlewidth(slidepos(i)) + 'px'
					}, option.speed, 'linear');
				};
			var initdirectionbutton = function() {
					var el = element;
					el.append('<div class="nextbutton"></div><div class="prevbutton"></div>');
					el.children('.nextbutton').bind('click', function(event) {
						goto(currentslide + 1, true, false);
					});
					el.children('.prevbutton').bind('click', function(event) {
						goto(currentslide - 1, true, false);
					});
				};
			var initbuttonnav = function() {
					var el = element,
						n = numberslides,
						buttonname = 'bullet',
						activeclass = 'bulletactive';
					if (settings.buttonnav == 'numbers') {
						buttonname = 'numbers';
						activeclass = 'numberactive';
					}
					el.append('<div class="buttonnav"></div>');
					var buttonnav = el.children('.buttonnav');
					for (var i = 0; i < n; i++) {
						var number = '';
						if (buttonname == 'numbers') {
							number = i + 1;
						}
						$('<div class="' + buttonname + '">' + number + '</div>').css({
							'text-align': 'center'
						}).bind('click', function(event) {
							goto($(this).index(), true, false);
						}).appendto(buttonnav);
					}
					var b = buttonnav.children('.' + buttonname);
					b.eq(0).addclass(activeclass)
					buttonnav.css({
						'width': numberslides * b.outerwidth(true),
						'height': b.outerheight(true)
					});
				};
			var buttonnavstate = function() {
					var o = settings,
						buttonnav = element.children('.buttonnav');
					if (o.buttonnav == 'numbers') {
						var numbers = buttonnav.children('.numbers');
						numbers.removeclass('numberactive');
						numbers.eq(currentslide).addclass('numberactive');
					} else {
						var bullet = buttonnav.children('.bullet');
						bullet.removeclass('bulletactive');
						bullet.eq(currentslide).addclass('bulletactive');
					}
				};
			var initdesc = function() {
					var desc = $(settings.descriptioncontainer),
						w = desc.width(),
						h = desc.height(),
						descitems = desc.children('div'),
						n = descitems.length;
					for (var i = 0; i < n; i++) {
						descitems.eq(i).hide().css({
							'position': 'absolute',
							'top': '0',
							'left': '0'
						});
					}
					descitems.eq(0).show();
				};
			var hidedesc = function(index) {
					var o = settings;
					if (o.description == true) {
						var desc = $(o.descriptioncontainer);
						desc.children('div').eq(index).hide();
					}
				};
			var showdesc = function(index) {
					var o = settings;
					if (o.description == true) {
						var desc = $(o.descriptioncontainer);
						desc.children('div').eq(index).show();
					}
				};
			var initspinner = function() {
					var sz = setimagesize(0);
					$('<div class="spinner"></div>').hide().css(setslideposition(0)).css({
						'width': sz.width + 'px',
						'height': sz.height + 'px',
						'z-index': numberslides + 3,
						'position': 'absolute',
						'cursor': 'pointer',
						'overflow': 'hidden',
						'padding': '0',
						'margin': '0',
						'border': 'none'
					}).appendto(carousel);
				};
			var initvideo = function() {
					initspinner();
					var sz = setimagesize(0);
					$('<div class="videooverlay"></div>').hide().css(setslideposition(0)).css({
						'width': sz.width + 'px',
						'height': sz.height + 'px',
						'z-index': numberslides + 2,
						'position': 'absolute',
						'cursor': 'pointer',
						'overflow': 'hidden',
						'padding': '0',
						'margin': '0',
						'border': 'none'
					}).bind('click', videooverlayclick).appendto(carousel);
					showvideooverlay(currentslide);
				};
			var showvideooverlay = function(index) {
					if (slideitems.eq(index).children('a').hasclass('video')) {
						carousel.children('.videooverlay').show();
					}
				};
			var hidevideooverlay = function() {
					var car = carousel;
					car.children('.videooverlay').hide().children().remove();
					car.children('.spinner').hide();
				};
			var getvideo = function(url) {
					var types = videos,
						src;
					$.each(types, function(i, e) {
						if (url.match(e.reg)) {
							var id = url.split(e.split)[e.index].split('?')[0].split('&')[0];
							src = e.url.replace("%id%", id);
						}
					});
					return src;
				};
			var addvideocontent = function() {
					var vo = carousel.children('.videooverlay'),
						url = slideitems.eq(currentslide).children('a').attr('href'),
						src = getvideo(url);
					$('<iframe></iframe>').attr({
						'width': vo.width() + 'px',
						'height': vo.height() + 'px',
						'src': src,
						'frameborder': '0'
					}).bind('load', videoload).appendto(vo);
				};
			var videooverlayclick = function(event) {
					addvideocontent();
					carousel.children('.spinner').show();
					$(this).hide();
					if (settings.autoplay == true) {
						stopautoplay();
						pause = false;
					}
				};
			var videoload = function(event) {
					var car = carousel;
					car.children('.videooverlay').show();
					car.children('.spinner').hide();
				};
			var runautoplay = function() {
					intervalprocess = setinterval(function() {
						goto(currentslide + 1, false, true);
					}, settings.autoplayinterval);
				};
			var stopautoplay = function() {
					if (settings.autoplay == true) {
						clearinterval(intervalprocess);
						return;
					}
				};
			this.prev = function() {
				goto(currentslide - 1, true, false);
			};
			this.next = function() {
				goto(currentslide + 1, true, false);
			};
			this.goto = function(index) {
				goto(index, true, false);
			};
			this.pause = function() {
				stopautoplay();
				pause = false;
			};
			this.resume = function() {
				if (settings.autoplay == true) {
					runautoplay();
				}
			};
		};
	$.fn.carousel = function(options) {
		var returnarr = [];
		for (var i = 0; i < this.length; i++) {
			if (!this[i].carousel) {
				this[i].carousel = new carouselevo(this[i], options);
				this[i].carousel.init();
			}
			returnarr.push(this[i].carousel);
		}
		return returnarr.length > 1 ? returnarr : returnarr[0];
	};
	$.fn.carousel.defaults = {
		halign: 'center',
		valign: 'center',
		hmargin: 0.5,
		vmargin: 0.2,
		frontwidth: 400,
		frontheight: 300,
		carouselwidth: 1000,
		carouselheight: 360,
		left: 0,
		right: 0,
		top: 0,
		bottom: 0,
		backzoom: 0.8,
		slidesperscroll: 5,
		speed: 500,
		buttonnav: 'none',
		directionnav: false,
		autoplay: true,
		autoplayinterval: 5000,
		pauseonhover: true,
		mouse: true,
		shadow: false,
		reflection: false,
		reflectionheight: 0.2,
		reflectionopacity: 0.5,
		reflectioncolor: '255,255,255',
		description: false,
		descriptioncontainer: '.description',
		backopacity: 1,
		before: function(carousel) {},
		after: function(carousel) {}
	};
})(jquery);