$(document).ready(function(){
	var gallery_holder = $('#gallery');
	var gallery_switcher1 = gallery_holder.find('.gallery-nav>li.nav-list');
	var gallery_switcher2 = gallery_holder.find('.gallery-steps>li');
	var gallery_list = gallery_holder.find('.gallery-list>li');
	var active_class = 'active';
	var duration = 500;
	var auto_time = 4000;
	var listOfSlides = '.gallery-list>li';
	var switcher1 = '.gallery-nav>li.nav-list';
	var switcher2 = '.gallery-steps>li';
	gall1 = gallery_holder.gallery({
		duration: duration,
		autoRotation: auto_time,
		effect:'fade',
		listOfSlides: listOfSlides,
		switcher: switcher1
	});
	gall2 = gallery_holder.gallery({
		duration: duration,
		autoRotation: auto_time,
		effect:'fade',
		listOfSlides: listOfSlides,
		switcher: switcher2
	});
	gallery_switcher1.each(function(i, _obj){
		var hold = $(this);
		var eq = gallery_switcher2.eq(i);
		hold.click(function(){
			if(!eq.hasClass(active_class)){
				eq.trigger('click');
			}
		});
	});
	gallery_switcher2.each(function(i, _obj){
		var hold = $(this);
		var eq = gallery_switcher1.eq(i);
		hold.click(function(){
			if(!eq.hasClass(active_class)){
				eq.trigger('click');
			}
		});
	});
	gallery_holder.find('.gallery-list').mouseenter(function(){
		gall1.stop();
		gall2.stop();
	}).mouseleave(function(){
		gall1.play();
		gall2.play();
	})
});

/* Gallery */
(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 = {
				randomSlide: false,
				changeHeight: false,
				duration: 1000,
				slideElement: 1,
				event: 'click',
				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,
				swicherReplace: 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;
			var switcherReplace = _hold.find(_this.options.swicherReplace);
			
			// 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"
			if(_this.options.changeHeight){
				if (_this.options.effect){
					_el.parent().css({height: _list.eq(_active).outerHeight(true), overflow: 'hidden'});
				}else{
					if(_this.options.slideElement>1){
						var active_H = _list.children().eq(_active).outerHeight(true);
						for (var i = 1; i < _this.options.slideElement; i++){
							if(active_H<_list.children().eq(_active+i).outerHeight(true)){
								active_H=_list.children().eq(_active+i).outerHeight(true)
							}
						};
						_el.parent().css({height: active_H, overflow: 'hidden'});
					}else	_el.parent().css({height: _list.children().eq(_active).outerHeight(true), overflow: 'hidden'});
				}
			}
			if (switcherReplace) switcherReplace.html((_active+1)+'/'+(_count+1));
			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.changeHeight){
					_el.parent().animate({
						height: _list.eq(_active).outerHeight(true)
					}, {queue:false, duration:_speed});
				}
				if (_this.options.switcher) _switcher.removeClass('active').eq(_active).addClass('active');
				_last = _active;
				if (switcherReplace) switcherReplace.html((_active+1)+'/'+(_count+1));
			}
			
			// 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 && _this.options.slideElement) _switcher.removeClass('active').eq(_active/_this.options.slideElement).addClass('active');
				else{
					if (_this.options.switcher) _switcher.removeClass('active').eq(_active).addClass('active');
				}
				if(_this.options.changeHeight){
					if(_this.options.slideElement>1){
						var active_H = _list.children().eq(_active).outerHeight(true);
						for (var i = 1; i < _this.options.slideElement; i++){
							if(active_H<_list.children().eq(_active+i).outerHeight(true)){
								active_H=_list.children().eq(_active+i).outerHeight(true)
							}
						};
						_el.parent().animate({
							height: active_H
						}, {queue:false, duration:_speed});
					}else{
						_el.parent().animate({
							height: _list.children().eq(_active).outerHeight(true)
						}, {queue:false, duration:_speed});
					}
				}
			}
			function toPrepare(){
				if ((_active == rew) && _this.options.circle) _active = -_this.options.slideElement;
				for (var i = 0; i < _this.options.slideElement; i++){
					if(_this.options.randomSlide){
						var pre_active = _active;
						if(_this.options.listOfSlides.length){
							while(pre_active == _active){
								_active = parseInt(Math.random()*(_count+1));
							}
						}
					}else{
						_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();
			}
			if(_this._timer){
				_this._hold.bind('runTimer', function(){
					if(_this._t) clearTimeout(_this._t);
					_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(){
				if (_this.options.event=='click'){
					if (_this.options.slideElement){
						_active = _switcher.index($(this))*_this.options.slideElement;
					}else{
						_active = _switcher.index($(this));
					}
					if(_this._t) clearTimeout(_this._t);
					if (!_this.options.effect) scrollEl();
					else fadeElement();
					if (_this._timer) _this._hold.trigger('runTimer');
				}
				return false;
			}).mouseenter(function(){
				if (_this.options.event=='hover'){
					if (_this.options.slideElement){
						_active = _switcher.index($(this))*_this.options.slideElement;
					}else{
						_active = _switcher.index($(this));
					}
					if(_this._t) clearTimeout(_this._t);
					if (!_this.options.effect) scrollEl();
					else fadeElement();
					if (_this._timer) _this._hold.trigger('runTimer');
				}
			});
			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));