(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,
				directionBox: false,
				IE: false,
				textBox: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 _textBox = _hold.find(_this.options.textBox);
			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;
			var flag = true;
			var der = _this.options.directionBox;
			
			// 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--;
			}
			if(_textBox){
				var typ = _textBox.outerHeight(true);
				if (!der) _textBox.css({bottom:-typ});
				else _textBox.css({top:-typ});
			}
			// 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');
				_list.parent().css({height: _list.eq(_active).outerHeight(true)});
				if (!der) _textBox.eq(_active).css({bottom:0});
				else _textBox.eq(_active).css({top:0});
			}
			
			// 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}, _speed);
					_list.removeClass('active').eq(_active).addClass('active').animate({
						opacity:1
					}, _speed, function(){
						if(_this.options.textBox) setTimeout(function(){
							if (!der) 
								_textBox.eq(_active).animate({bottom:0}, _speed, function(){
									_textBox.eq(_last).css({bottom:-typ});
									_last = _active;
									flag = true;
								});
							else
								_textBox.eq(_active).animate({top:0}, _speed, function(){
									_textBox.eq(_last).css({top:-typ});
									_last = _active;
									flag = true;
								});
						}, 500);
						$(this).css('opacity','auto');
					});
				}
				_list.parent().animate({height: _list.eq(_active).outerHeight(true)}, _speed);
				if (_this.options.switcher) _switcher.removeClass('active').eq(_active).addClass('active');
				if(!_this.options.textBox) _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(){
				
					if(_this._t) clearTimeout(_this._t);
					_this._t = setInterval(function(){
						if (flag){
							flag = false;
							if(!_this.options.effect) flag = true;
							if(!_this.options.textBox) flag = true;
							toPrepare();
						}
					}, _this._timer);
			});
			_next.click(function(){
				if(flag){
					flag = false;
					if(!_this.options.effect) flag = true;
					if(!_this.options.textBox) flag = true;
					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(flag){
					flag = false;
					if(!_this.options.effect) flag = true;
					if(!_this.options.textBox) flag = true;
					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(){
				if (flag){
					flag = false;
					if(!_this.options.effect) flag = true;
					if(!_this.options.textBox) flag = true;
					_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;
			if (_this._t) clearTimeout(_this._t);
		},
		play: function(){
			var _this = this;
			if (_this._t) clearTimeout(_this._t);
			if (_this._timer) _this._hold.trigger('runTimer');
		}
	}
}(jQuery));
$(document).ready(function(){
	$('div.gallery-box').gallery({
		duration: 600,
		effect: 'fade',
		listOfSlides: 'ul.gallery-list > li',
		switcher: '.switcher > li'
	});
});