// init page
jQuery(function() {
	ieHover('#nav ul li', 'hover');
	initMenu();
	initGallery();
	classTabs.init();
});

// init menu
function initMenu() {
	jQuery('#nav > li').each(function(){
		var item = jQuery(this);
		item.hover(function(){
			item.siblings(item).removeClass('hover');
			item.addClass('hover');
		});
	});
}

// jquery ie6 hover pack
function ieHover(obj, hoverClass){
	var elements = obj;
	var hoverClass = hoverClass;
	if(jQuery.browser.msie && parseInt(jQuery.browser.version) == 6){
		jQuery(elements).hover(function(){
			jQuery(this).addClass(hoverClass);
		}, function(){
			jQuery(this).removeClass(hoverClass);
		});
	}
}

// initGallery
function initGallery() {
	jQuery('.main-gallery').each(function() {
		var holder = jQuery(this),
			slideElements = jQuery('.slider > li', this);
		
		if(slideElements.length < 2) return;
		
		var next = jQuery('<a class="button-next" href="#" />').appendTo(holder),
			prev = jQuery('<a class="button-prev" href="#" />').appendTo(holder),
			switherHolder = jQuery('<div class="switcher-holder" />').appendTo(holder);
		
		holder.fadeGallery({
			slideElements: slideElements,
			generatePagination: switherHolder,
			btnNext: next,
			btnPrev: prev,
			pauseOnHover: true,
			autoRotation: true,
			switchTime: 5000,
			duration: 650
		})
		
		jQuery(window).focus(function() {
			holder.trigger('play');
		}).blur(function() {
			holder.trigger('pause');
		})
	})
}

// classTabs
var classTabs = {
	hasClass: function(obj,cname) {
		return (obj.className ? obj.className.match(new RegExp('(\\s|^)'+cname+'(\\s|$)')) : false);
	},
	addClass: function (obj,cname) {
		if (!this.hasClass(obj,cname)) {obj.className += " "+cname;this.accurateRecordClass(obj)}
	},
	removeClass: function(obj,cname) {
		if (this.hasClass(obj,cname)) {obj.className=obj.className.replace(new RegExp('(\\s|^)'+cname+'(\\s|$)'),' ');this.accurateRecordClass(obj)}
	},
	accurateRecordClass: function (obj) {
		if (obj.className) obj.className = obj.className.replace(/(\s+)/g, ' ').replace(/(^ | $)/g, '');
	},
	applyCss: function (obj, css){
		for(var key in css) {
			obj.style[key] = css[key];
		}
	},
	applyEvent: function(v,settings) {
		var c = document.getElementById(v.hr);
		if (c) {
			for (var i = 0; i < v.tab.length; i++) {
				this.applyCss(document.getElementById(v.tab[i].hr),settings.cssHide);
				this.removeClass(v.tab[i],settings.activeClass);
				if (settings.addParentClass) {
					this.removeClass(v.tab[i].parent,settings.parentActiveClass);
				}
			}
			this.addClass(v,settings.activeClass);
			if (settings.addParentClass) {
				this.addClass(v.parent,settings.parentActiveClass);
			}
			this.applyCss(c,settings.cssShow);
			return false;
		}
	},
	init: function (o) {
		var settings = {
			addParentClass: false,
			addFirstLast: false,
			addHoverClass: false,
			eventClick: true,
			clickDisabled:true,
			cssShow:{position: 'static',left: 0,top: 0},
			cssHide:{position: 'absolute',left: '-9999px',top: '-99999px'},
			activeClass: 'active',
			parentActiveClass: 'parentactive',
			firstClass: 'first',
			lastClass: 'last',
			hoverClass: 'hover',
			tagTabMenu: 'ul',
			classTabMenu: 'tabset',
			tagBtnTabMenu: 'a',
			classBtnTabMenu: 'tab'
		};
		if (typeof(o) == 'object') {
			for(var key in o) if (typeof(settings[key]) == typeof(o[key])) settings[key] = o[key];
		}
		this.sets = document.getElementsByTagName(settings.tagTabMenu);
		for (var i = 0; i < this.sets.length; i++) {
			if (this.hasClass(this.sets[i],settings.classTabMenu)) {
				var tab = [];
				var btn = this.sets[i].getElementsByTagName(settings.tagBtnTabMenu);
				if (btn.length > 1 && settings.addFirstLast){
					this.addClass(btn[0].parentNode, settings.firstClass);
					this.addClass(btn[0], settings.firstClass);
					this.addClass(btn[btn.length -1].parentNode, settings.lastClass);
					this.addClass(btn[btn.length -1], settings.lastClass);
				}
				for (var j = 0; j < btn.length; j++) {
					if (settings.addHoverClass){
						btn[j].parentNode.onmouseover = function() {classTabs.addClass(this,settings.hoverClass)}
						btn[j].parentNode.onmouseout = function() {classTabs.removeClass(this,settings.hoverClass)}
					}
					if (this.hasClass(btn[j],settings.classBtnTabMenu)) {
						var _hr = btn[j].href;
						if(_hr.indexOf('#') != -1) {
							_hr = _hr.substr(_hr.indexOf("#") + 1);
							if (_hr.length > 0) {
								btn[j].hr = _hr;
								btn[j].parent = btn[j].parentNode;
								tab.push(btn[j]);
								btn[j].tab = tab;
								var c = document.getElementById(_hr);
								if (c) {
									if (this.hasClass(btn[j],settings.activeClass)) {
										this.applyCss(c,settings.cssShow);
										if (settings.addParentClass && !this.hasClass(btn[j].parent,settings.parentActiveClass)) {
											this.addClass(btn[j].parent,settings.parentActiveClass);
										}
									} else {
										this.applyCss(c,settings.cssHide);
									}
								}
								if (settings.eventClick) {
									btn[j].onclick = function () {
										classTabs.applyEvent(this,settings);
										return false;
									}
								} else {
									btn[j].onmouseover = function() {
										classTabs.applyEvent(this,settings);
									}
									if (settings.clickDisabled) {
										btn[j].onclick = function () {return false;}
									}
								}
							}
						}
					}
				}
			}
		}
	}
};

// slideshow plugin
jQuery.fn.fadeGallery = function(_options){
	var _options = jQuery.extend({
		slideElements:'div.slideset > div',
		pagerLinks:'div.pager a',
		generatePagination:null,
		btnNext:'a.next',
		btnPrev:'a.prev',
		btnPlayPause:'a.play-pause',
		btnPlay:'a.play',
		btnPause:'a.pause',
		pausedClass:'paused',
		disabledPrevClass: 'prev-disabled',
		disabledNextClass: 'next-disabled',
		playClass:'playing',
		activeClass:'active',
		loadingClass:'ajax-loading',
		loadedClass:'slide-loaded',
		dynamicImageLoad:false,
		dynamicImageLoadAttr:'alt',
		currentNum:false,
		allNum:false,
		startSlide:null,
		noCircle:false,
		pauseOnHover:true,
		autoRotation:false,
		autoHeight:false,
		onBeforeFade:false,
		onAfterFade:false,
		onChange:false,
		disableWhileAnimating:false,
		stopAfterClick:false,
		switchTime:5000,
		duration:650,
		event:'click'
	},_options);

	return this.each(function(){
		// gallery options
		if(this.slideshowInit) return; else this.slideshowInit;
		var _this = jQuery(this);
		var _slides = jQuery(_options.slideElements, _this);
		var _pagerLinks = jQuery(_options.pagerLinks, _this);
		var _generatePagination = jQuery(_options.generatePagination, _this);
		var _btnPrev = jQuery(_options.btnPrev, _this);
		var _btnNext = jQuery(_options.btnNext, _this);
		var _btnPlayPause = jQuery(_options.btnPlayPause, _this);
		var _btnPause = jQuery(_options.btnPause, _this);
		var _btnPlay = jQuery(_options.btnPlay, _this);
		var _pauseOnHover = _options.pauseOnHover;
		var _dynamicImageLoad = _options.dynamicImageLoad;
		var _dynamicImageLoadAttr = _options.dynamicImageLoadAttr;
		var _autoRotation = _options.autoRotation;
		var _activeClass = _options.activeClass;
		var _loadingClass = _options.loadingClass;
		var _loadedClass = _options.loadedClass;
		var _disabledNextClass = _options.disabledNextClass;
		var _disabledPrevClass = _options.disabledPrevClass;
		var _pausedClass = _options.pausedClass;
		var _playClass = _options.playClass;
		var _autoHeight = _options.autoHeight;
		var _stopAfterClick = _options.stopAfterClick;
		var _duration = _options.duration;
		var _switchTime = _options.switchTime;
		var _controlEvent = _options.event;
		var _currentNum = (_options.currentNum ? jQuery(_options.currentNum, _this) : false);
		var _allNum = (_options.allNum ? jQuery(_options.allNum, _this) : false);
		var _startSlide = _options.startSlide;
		var _noCycle = _options.noCircle;
		var _onChange = _options.onChange;
		var _onBeforeFade = _options.onBeforeFade;
		var _onAfterFade = _options.onAfterFade;
		var _disableWhileAnimating = _options.disableWhileAnimating;

		// gallery init
		var _anim = false;
		var _hover = false;
		var _pause = false;
		var _prevIndex = 0;
		var _currentIndex = 0;
		var _slideCount = _slides.length;
		var _timer;
		if(_slideCount < 2) return;

		_prevIndex = _slides.index(_slides.filter('.'+_activeClass));
		if(_prevIndex < 0) _prevIndex = _currentIndex = 0;
		else _currentIndex = _prevIndex;
		if(_startSlide != null) {
			if(_startSlide == 'random') _prevIndex = _currentIndex = Math.floor(Math.random()*_slideCount);
			else _prevIndex = _currentIndex = parseInt(_startSlide);
		}
		_slides.hide().eq(_currentIndex).show();
		if(_autoRotation) _this.removeClass(_pausedClass).addClass(_playClass);
		else _this.removeClass(_playClass).addClass(_pausedClass);
		if(_autoHeight) _slides.eq(_currentIndex).parent().css({height:_slides.eq(_currentIndex).outerHeight(true)});
		
		// gallery control
		if(_btnPrev.length) {
			_btnPrev.bind(_controlEvent,function(){
				if ( _stopAfterClick ) {
					_autoRotation = false;
					if(_timer) clearTimeout(_timer);
					_this.removeClass(_playClass).addClass(_pausedClass);
				}
				prevSlide();
				return false;
			});
		}
		if(_btnNext.length) {
			_btnNext.bind(_controlEvent,function(){
				if ( _stopAfterClick ) {
					_autoRotation = false;
					if(_timer) clearTimeout(_timer);
					_this.removeClass(_playClass).addClass(_pausedClass);
				}
				nextSlide();
				return false;
			});
		}
		if(_generatePagination.length){
			_generatePagination.empty();
			var _list = jQuery('<ul class="switcher" />').appendTo(_generatePagination);
			for(var i=0; i<_slideCount; i++) $('<li><a href="#">'+(i+1)+'</a></li>').appendTo(_list);
			_pagerLinks = _list.children();
		}
		if(_pagerLinks.length) {
			_pagerLinks.each(function(_ind){
				jQuery(this).bind(_controlEvent,function(){
					if(_currentIndex != _ind) {
						if(_disableWhileAnimating && _anim) return;
						_prevIndex = _currentIndex;
						_currentIndex = _ind;
						if ( _stopAfterClick ) {
							_autoRotation = false;
							if(_timer) clearTimeout(_timer);
							_this.removeClass(_playClass).addClass(_pausedClass);
						}
						switchSlide();
					}
					return false;
				});
			});
		}

		// play pause section
		if(_btnPlayPause.length) {
			_btnPlayPause.bind(_controlEvent,function(){
				if(_this.hasClass(_pausedClass)) {
					_this.removeClass(_pausedClass).addClass(_playClass);
					_autoRotation = true;
					autoSlide();
				} else {
					_autoRotation = false;
					if(_timer) clearTimeout(_timer);
					_this.removeClass(_playClass).addClass(_pausedClass);
				}
				return false;
			});
		}
		if(_btnPlay.length) {
			_btnPlay.bind(_controlEvent,function(){
				_this.removeClass(_pausedClass).addClass(_playClass);
				_autoRotation = true;
				autoSlide();
				return false;
			});
		}
		if(_btnPause.length) {
			_btnPause.bind(_controlEvent,function(){
				_autoRotation = false;
				if(_timer) clearTimeout(_timer);
				_this.removeClass(_playClass).addClass(_pausedClass);
				return false;
			});
		}

		// dynamic image loading (swap from ATTRIBUTE)
		function loadSlide(slide) {
			if(!slide.hasClass(_loadingClass) && !slide.hasClass(_loadedClass)) {
				var images = slide.find(_dynamicImageLoad) // pass selector here
				var imagesCount = images.length;
				if(imagesCount) {
					slide.addClass(_loadingClass);
					images.each(function(){
						var img = this;
						img.onload = function(){
							img.loaded = true;
							img.onload = null;
							setTimeout(reCalc,_duration);
						}
						img.setAttribute('src', img.getAttribute(_dynamicImageLoadAttr));
						img.setAttribute(_dynamicImageLoadAttr,'');
					}).css({opacity:0});

					function reCalc() {
						var cnt = 0;
						images.each(function(){
							if(this.loaded) cnt++;
						});
						if(cnt == imagesCount) {
							slide.removeClass(_loadingClass);
							images.animate({opacity:1},{duration:_duration,complete:function(){
								if(jQuery.browser.msie && jQuery.browser.version < 9) jQuery(this).css({opacity:'auto'})
							}});
							slide.addClass(_loadedClass)
						}
					}
				}
			}
		}

		// gallery animation
		function prevSlide() {
			if(_disableWhileAnimating && _anim) return;
			_prevIndex = _currentIndex;
			if(_currentIndex > 0) _currentIndex--;
			else {
				if(_noCycle) return;
				else _currentIndex = _slideCount-1;
			}
			switchSlide();
		}
		function nextSlide() {
			if(_disableWhileAnimating && _anim) return;
			_prevIndex = _currentIndex;
			if(_currentIndex < _slideCount-1) _currentIndex++;
			else {
				if(_noCycle) return;
				else _currentIndex = 0;
			}
			switchSlide();
		}
		function refreshStatus() {
			if(_dynamicImageLoad) loadSlide(_slides.eq(_currentIndex));
			if(_pagerLinks.length) _pagerLinks.removeClass(_activeClass).eq(_currentIndex).addClass(_activeClass);
			if(_currentNum) _currentNum.text(_currentIndex+1);
			if(_allNum) _allNum.text(_slideCount);
			_slides.eq(_prevIndex).removeClass(_activeClass);
			_slides.eq(_currentIndex).addClass(_activeClass);
			if(_noCycle) {
				if(_btnPrev.length) {
					if(_currentIndex == 0) _btnPrev.addClass(_disabledPrevClass);
					else _btnPrev.removeClass(_disabledPrevClass);
				}
				if(_btnNext.length) {
					if(_currentIndex == _slideCount-1) _btnNext.addClass(_disabledNextClass);
					else _btnNext.removeClass(_disabledNextClass);
				}
			}
			if(typeof _onChange === 'function') {
				_onChange(_this, _slides, _prevIndex, _currentIndex);
			}
		}
		function switchSlide() {
			_anim = true;
			if(typeof _onBeforeFade === 'function') _onBeforeFade(_this, _slides, _prevIndex, _currentIndex);
			_slides.eq(_prevIndex).fadeOut(_duration,function(){
				_anim = false;
			});
			_slides.eq(_currentIndex).fadeIn(_duration,function(){
				if(typeof _onAfterFade === 'function') _onAfterFade(_this, _slides, _prevIndex, _currentIndex);
			});
			if(_autoHeight) _slides.eq(_currentIndex).parent().animate({height:_slides.eq(_currentIndex).outerHeight(true)},{duration:_duration,queue:false});
			refreshStatus();
			autoSlide();
		}

		// autoslide function
		function autoSlide() {
			if(!_autoRotation || _hover || _pause) return;
			if(_timer) clearTimeout(_timer);
			_timer = setTimeout(nextSlide,_switchTime+_duration);
		}
		if(_pauseOnHover) {
			_this.hover(function(){
				_hover = true;
				if(_timer) clearTimeout(_timer);
			},function(){
				_hover = false;
				autoSlide();
			});
		}
		
		_this.bind('pause', function() {
			_pause = true;
			if(_timer) clearTimeout(_timer);
		}).bind('play', function() {
			_pause = false;
			autoSlide();
		})
		
		refreshStatus();
		autoSlide();
	});
}