(function($){
	function Gallery(el, options){
		this._hold = $(el);
		this.initOptions(options);
		this._timer = options.autoRotation;
		this._t;
		this.initialize();
	}
	
	$.fn.gallery = function(options){
		return new Gallery(this.get(0), options);
	};
	
	Gallery.prototype = {
		initOptions: function(_obj){
			this.options = {
				duration: 700,
				slideElement: 1,
				autoRotation: false,
				effect: false,
				listOfSlides: 'ul > li',
				switcher: false,
				disableBtn: false,
				nextBtn: 'a.link-next, a.btn-next, a.next',
				prevBtn: 'a.link-prev, a.btn-prev, a.prev',
				circle: true,
				direction: false,
				IE: false
			};
			for (key in _obj) 
				this.options[key] = _obj[key];
		},
		initialize: function(){
			var _this = this;
			var _hold = _this._hold;
			var _speed = _this.options.duration;
			var _timer = _this.options.autoRotation;
			var _el = _hold.find(_this.options.listOfSlides);
			if (_this.options.effect) 
				var _list = _el;
			else 
				var _list = _el.parent();
			var _switcher = _hold.find(_this.options.switcher);
			var _next = _hold.find(_this.options.nextBtn);
			var _prev = _hold.find(_this.options.prevBtn);
			var _count = _el.index(_el.filter(':last'));
			var _w = _el.outerWidth(true);
			var _h = _el.outerHeight(true);
			if (_this.options.switcher) 
				var _active = _switcher.index(_switcher.filter('.active:eq(0)'));
			else 
				var _active = _el.index(_el.filter('.active:eq(0)'));
			if (_active < 0) 
				_active = 0;
			var _last = _active;
			
			// Installation directions
			if (!_this.options.direction) {
				var _wrapHolderW = Math.ceil(_list.parent().width() / _w);
				if (((_wrapHolderW - 1) * _w + _w / 2) > _list.parent().width()) 
					_wrapHolderW--;
			}
			else {
				var _wrapHolderW = Math.ceil(_list.parent().height() / _h);
				if (((_wrapHolderW - 1) * _h + _h / 2) > _list.parent().height()) 
					_wrapHolderW--;
			}
			
			// Setting "fade" or "slide" effect
			if (!_this.options.effect) 
				var rew = _count - _wrapHolderW + 1;
			else 
				var rew = _count;
			if (!_this.options.effect) {
				if (!_this.options.direction) 
					_list.css({
						marginLeft: -(_w * _active)
					})
				else 
					_list.css({
						marginTop: -(_h * _active)
					})
			}
			else {
				_list.css({
					opacity: 0
				}).removeClass('active').eq(_active).addClass('active').css({
					opacity: 1
				}).css('opacity', 'auto');
				_switcher.removeClass('active').eq(_active).addClass('active');
			}
			
			// Disable or enable buttons "prev next"
			if (_this.options.disableBtn) {
				if (_count < _wrapHolderW) 
					_next.addClass(_this.options.disableBtn);
				_prev.addClass(_this.options.disableBtn);
			}
			
			// Function to "fade"
			function fadeElement(){
				if ($.browser.msie && _this.options.IE) {
					_list.eq(_last).css({
						opacity: 0
					});
					_list.removeClass('active').eq(_active).addClass('active').css({
						opacity: 'auto'
					});
				}
				else {
					_list.eq(_last).animate({
						opacity: 0
					}, {
						queue: false,
						duration: _speed
					});
					_list.removeClass('active').eq(_active).addClass('active').animate({
						opacity: 1
					}, {
						queue: false,
						duration: _speed,
						complete: function(){
							$(this).css('opacity', 'auto');
						}
					});
				}
				if (_this.options.switcher) 
					_switcher.removeClass('active').eq(_active).addClass('active');
				_last = _active;
			}
			
			// Function for "slide"
			function scrollEl(){
				if (!_this.options.direction) 
					_list.animate({
						marginLeft: -(_w * _active)
					}, {
						queue: false,
						duration: _speed
					})
				else 
					_list.animate({
						marginTop: -(_h * _active)
					}, {
						queue: false,
						duration: _speed
					})
				if (_this.options.switcher) 
					_switcher.removeClass('active').eq(_active).addClass('active');
			}
			function toPrepare(){
				if ((_active == rew) && _this.options.circle) 
					_active = -_this.options.slideElement;
				for (var i = 0; i < _this.options.slideElement; i++) {
					_active++;
					if (_active > rew) {
						_active--;
						if (_this.options.disableBtn && (_count > _wrapHolderW)) 
							_next.addClass(_this.options.disableBtn);
					}
				};
				if (_active == rew) 
					if (_this.options.disableBtn && (_count > _wrapHolderW)) 
						_next.addClass(_this.options.disableBtn);
				if (!_this.options.effect) 
					scrollEl();
				else 
					fadeElement();
			}
			_this._hold.bind('runTimer', function(){
				_this._t = setInterval(function(){
					toPrepare();
				}, _this._timer);
			});
			_next.click(function(){
				if (_this._t) 
					clearTimeout(_this._t);
				if (_this.options.disableBtn && (_count > _wrapHolderW)) 
					_prev.removeClass(_this.options.disableBtn);
				toPrepare();
				if (_this._timer) 
					_this._hold.trigger('runTimer');
				return false;
			});
			_prev.click(function(){
				if (_this._t) 
					clearTimeout(_this._t);
				if (_this.options.disableBtn && (_count > _wrapHolderW)) 
					_next.removeClass(_this.options.disableBtn);
				if ((_active == 0) && _this.options.circle) 
					_active = rew + _this.options.slideElement;
				for (var i = 0; i < _this.options.slideElement; i++) {
					_active--;
					if (_active < 0) {
						_active++;
						if (_this.options.disableBtn && (_count > _wrapHolderW)) 
							_prev.addClass(_this.options.disableBtn);
					}
				};
				if (_active == 0) 
					if (_this.options.disableBtn && (_count > _wrapHolderW)) 
						_prev.addClass(_this.options.disableBtn);
				if (!_this.options.effect) 
					scrollEl();
				else 
					fadeElement();
				if (_this._timer) 
					_this._hold.trigger('runTimer');
				return false;
			});
			if (_this.options.switcher) 
				_switcher.click(function(){
					_active = _switcher.index($(this));
					if (_this._t) 
						clearTimeout(_this._t);
					if (!_this.options.effect) 
						scrollEl();
					else 
						fadeElement();
					if (_this._timer) 
						_this._hold.trigger('runTimer');
					return false;
				});
			if (_this._timer) 
				_this._hold.trigger('runTimer');
		},
		stop: function(){
			var _this = this;
			alert(1);
			if (_this._t) 
				clearTimeout(_this._t);
		},
		play: function(){
			var _this = this;
			alert(2);
			if (_this._t) 
				clearTimeout(_this._t);
			if (_this._timer) 
				_this._hold.trigger('runTimer');
		}
	}
}(jQuery));