$(document).ready(function(){
	$('div.intro').galleryCircle({
		btPrev: false,
		btNext: false,
		holderList: 'div.slideshow',
		scrollElParent: '> ul',
		scrollEl: 'li',
		step: true,
		numHolder: 'ul.slide-nav',
		numCreate: false,
		easing: false,
		switchTime: 5000,
		duration : 700
	});
	$('div.partners-gallery').scrollGallery({
		pagerLinks:false,
		btnPrev:'a.btn-up',
		btnNext:'a.btn-down',
		activeClass:'active',
		disabledClass:'disabled',
		generatePagination:false,
		curNum:false,
		allNum:false,
		circleSlide:true,
		pauseClass:false,
		pauseButton:false,
		pauseOnHover:false,
		switchTime:5000,
		duration:650,
		vertical:true,
		step:true
	});
	
	
	
});

/*--- gallery function ---*/
jQuery.fn.galleryCircle = function(_options){
	// defaults options
	var _options = jQuery.extend({
		btPrev: 'a.prev',
		btNext: 'a.next',
		holderList: 'div',
		scrollElParent: 'ul',
		scrollEl: 'li',
		numHolder: false,
		numCreate: false,
		step: false,
		innerMargin: 0,
		curPage: false,
		onClick: null,
		easing: 'linear',
		switchTime: false,
		duration : 1500
	},_options);

	return this.each(function(){
		var _this = jQuery(this);
		var _next = jQuery(_options.btNext, _this).length ? jQuery(_options.btNext, _this) : false;
		var _prev = jQuery(_options.btPrev, _this).length ? jQuery(_options.btPrev, _this) : false;
		var _holderList = jQuery(_options.holderList, _this);
		var _scrollElParent = jQuery(_options.scrollElParent, _holderList);
		var _scrollEl = jQuery(_options.scrollEl, _scrollElParent);
		var _numHolder = false ;
		if (_options.numHolder) _numHolder = jQuery(_options.numHolder, _this).length ? jQuery(_options.numHolder, _this) : false;
		var _step, _t = null;
		var _widthSum = 0;
		_scrollEl.each(function(){_widthSum += jQuery(this).outerWidth(true);})
		var _startPosition = _scrollEl.index(_scrollEl.filter('.active'));
		if (_startPosition==-1) _startPosition=0;
		_scrollEl.removeClass('active');
		var _easing = _options.easing;

		if (!_options.step) _step = _holderList.innerWidth();
		var _margin = _widthSum;
		_scrollElParent.append(_scrollEl.clone(true));
		_scrollElParent.prepend(_scrollEl.clone(true));

		var _offsetStartPosition =0;
		_offsetStartPosition = culcOffset(_startPosition);

		_scrollElParent.css('marginLeft', (-_margin+_options.innerMargin-_offsetStartPosition));

		//auto rotation
		if (_options.switchTime) {
			_t = setTimeout(function(){
				nextSlides();
			},_options.switchTime);
		}
		
		//button next "click"
		if (_options.btNext) {
			_next.click(function(){
				if (!_scrollElParent.is(':animated')) {
					if (jQuery.isFunction(_options.onClick)) _options.onClick.apply(_this);
					nextSlides();
				}
				return false;
			});
		}

		//button prev "click"
		if (_options.btPrev) {
			_prev.click(function(){
				if (!_scrollElParent.is(':animated')) {
					if (jQuery.isFunction(_options.onClick)) _options.onClick.apply(_this);
					prevSlides();
				}
				return false;
			});
		}

		//curent position
		function getCurElIndex(){
			var _curMargin = parseInt(_scrollElParent.css('marginLeft')) + _widthSum - _options.innerMargin;
			for(i=0; i < _scrollEl.length; i++){
				if (_curMargin == 0) return i;
				if (_curMargin <= _options.innerMargin) _curMargin += _scrollEl.eq(i).innerWidth(true);
				else _curMargin -= _scrollEl.eq(i).innerWidth(true);
				if (_curMargin == _options.innerMargin) return i+1;
			}
		}

		// offset of gallery if when activ element not first at start 
		function culcOffset(_ind){
			var _tmpcounter=0;
			var _pos=0;
			while (_tmpcounter < _ind){
				_pos += _scrollEl.eq(_tmpcounter).outerWidth(true);
				_tmpcounter++;
			};
			return _pos;
		}

		//go next slide
		function nextSlides(){
			if (_t) clearTimeout(_t);
			if (_options.step) {
				_curElIndex = getCurElIndex();
				_step = _scrollEl.eq(_curElIndex).innerWidth(true);
			};
			_margin = -parseInt(_scrollElParent.css('marginLeft'));
			_margin += _step;
			
			_scrollElParent.animate({'marginLeft':(-_margin+_options.innerMargin)}, {duration:_options.duration, easing: _easing, complete:function(){
				if (_margin >= _widthSum*2) {
					_margin = _widthSum + (_margin - _widthSum*2);
				}
				_scrollElParent.css({'marginLeft':-_margin+_options.innerMargin});
				jQuery.fn.galleryCircle.numListActive(_numHolder, _scrollEl);

				//autoslide
				if (_options.switchTime) {
					_t = setTimeout(function(){
						nextSlides();
					},_options.switchTime)
				}
			}});
		}

		//go prev slide
		function prevSlides(){
			if (_t) clearTimeout(_t);
			if (_options.step) {
				_curElIndex = getCurElIndex();
				if (_curElIndex == 0) _curElIndex= _scrollEl.length;
				_step = _scrollEl.eq(_curElIndex-1).innerWidth(true);
			};
			_margin = -parseInt(_scrollElParent.css('marginLeft'));
			_margin -= _step;
			_scrollElParent.animate({'marginLeft':(-_margin+_options.innerMargin)}, {duration:_options.duration, easing: _easing, complete:function(){
				if (_margin < _widthSum) {
					_margin = _widthSum*2 - (_widthSum - _margin);
				}
				_scrollElParent.css({'marginLeft':-_margin+_options.innerMargin});
				jQuery.fn.galleryCircle.numListActive(_numHolder, _scrollEl);

				//autoslide
				if (_options.switchTime) {
					_t = setTimeout(function(){
						nextSlides();
					},_options.switchTime)
				}
			}});
		}

		// Number list Create
		jQuery.fn.galleryCircle.numListCreate = function(_numHolder, _scrollEl){
			var _numListElC = '';
			for(var i=0; i<_scrollEl.length; i++){
				_numListElC += '<li><a href="">'+(i+1)+'</a></li>';
			}
			jQuery(_numHolder).html('<ul>'+_numListElC+'</ul>');
		};

		// Number list Activate
		jQuery.fn.galleryCircle.numListActive = function(_numHolder, _scrollEl){
			_curElIndex = getCurElIndex();
			if (jQuery(_options.curPage, _this).length && _options.curPage) jQuery(_options.curPage, _this).text('Pagina '+(getCurElIndex()+1)+'/'+_scrollEl.length);
			if (_numHolder) {
				jQuery('a',_numHolder).removeClass('active');
				jQuery('a',_numHolder).eq(_curElIndex).addClass('active');
			}
		};

		//click on control elemens
		function numClick() {
			jQuery(_options.numHolder, _this).find('a').click(function(){
				if (_t) clearTimeout(_t);
				var _aList = jQuery(_options.numHolder, _this).find('a');
				var _index = _aList.index(jQuery(this));
				_margin = _widthSum + _index * _scrollEl.outerWidth(true);
				_scrollElParent.animate({'marginLeft':(-_margin+_options.innerMargin)}, {duration:_options.duration, easing: _easing, complete:function(){
					if (_margin >= _widthSum*2) {
						_margin = _widthSum + (_margin - _widthSum*2);
					}
					_scrollElParent.css({'marginLeft':-_margin+_options.innerMargin});
					_aList.removeClass('active').eq(_index).addClass('active');

					//autoslide
					if (_options.switchTime) {
						_t = setTimeout(function(){
							nextSlides();
						},_options.switchTime)
					}
				}});
				return false;
			});
		};

		// init creating num list
		if (_options.numCreate) jQuery.fn.galleryCircle.numListCreate(_numHolder, _scrollEl);

		// pagination first init (example Page 2/6)
		if (jQuery(_options.curPage, _this).length && _options.curPage) jQuery(_options.curPage, _this).text('Pagina '+(getCurElIndex()+1)+'/'+_scrollEl.length);

		// init activate num list item and init numClick()
		if (_options.numHolder) {
			jQuery.fn.galleryCircle.numListActive(_numHolder, _scrollEl);
			numClick();
		}
	});
}

// scrolling gallery plugin
jQuery.fn.scrollGallery = function(_options){
	var _options = jQuery.extend({
		sliderHolder: '>div',
		slider:'>ul',
		slides: '>li',
		pagerLinks:'div.pager a',
		btnPrev:'a.link-prev',
		btnNext:'a.link-next',
		activeClass:'active',
		disabledClass:'disabled',
		generatePagination:'div.pg-holder',
		curNum:'em.scur-num',
		allNum:'em.sall-num',
		circleSlide:true,
		pauseClass:'gallery-paused',
		pauseButton:'none',
		pauseOnHover:true,
		autoRotation:false,
		stopAfterClick:false,
		switchTime:5000,
		duration:650,
		easing:'swing',
		event:'click',
		afterInit:false,
		vertical:false,
		step:false
	},_options);

	return this.each(function(){
		// gallery options
		var _this = jQuery(this);
		var _sliderHolder = jQuery(_options.sliderHolder, _this);
		var _slider = jQuery(_options.slider, _sliderHolder);
		var _slides = jQuery(_options.slides, _slider);
		var _btnPrev = jQuery(_options.btnPrev, _this);
		var _btnNext = jQuery(_options.btnNext, _this);
		var _pagerLinks = jQuery(_options.pagerLinks, _this);
		var _generatePagination = jQuery(_options.generatePagination, _this);
		var _curNum = jQuery(_options.curNum, _this);
		var _allNum = jQuery(_options.allNum, _this);
		var _pauseButton = jQuery(_options.pauseButton, _this);
		var _pauseOnHover = _options.pauseOnHover;
		var _pauseClass = _options.pauseClass;
		var _autoRotation = _options.autoRotation;
		var _activeClass = _options.activeClass;
		var _disabledClass = _options.disabledClass;
		var _easing = _options.easing;
		var _duration = _options.duration;
		var _switchTime = _options.switchTime;
		var _controlEvent = _options.event;
		var _step = _options.step;
		var _vertical = _options.vertical;
		var _circleSlide = _options.circleSlide;
		var _stopAfterClick = _options.stopAfterClick;
		var _afterInit = _options.afterInit;

		// gallery init
		if(!_slides.length) return;
		var _currentStep = 0;
		var _sumWidth = 0;
		var _sumHeight = 0;
		var _hover = false;
		var _stepWidth;
		var _stepHeight;
		var _stepCount;
		var _offset;
		var _timer;

		_slides.each(function(){
			_sumWidth+=$(this).outerWidth(true);
			_sumHeight+=$(this).outerHeight(true);
		});

		// calculate gallery offset
		function recalcOffsets() {
			if(_vertical) {
				if(_step) {
					_stepHeight = _slides.eq(_currentStep).outerHeight(true);
					_stepCount = Math.ceil((_sumHeight-_sliderHolder.height())/_stepHeight)+1;
					_offset = -_stepHeight*_currentStep;
				} else {
					_stepHeight = _sliderHolder.height();
					_stepCount = Math.ceil(_sumHeight/_stepHeight);
					_offset = -_stepHeight*_currentStep;
					if(_offset < _stepHeight-_sumHeight) _offset = _stepHeight-_sumHeight;
				}
			} else {
				if(_step) {
					_stepWidth = _slides.eq(_currentStep).outerWidth(true)*_step;
					_stepCount = Math.ceil((_sumWidth-_sliderHolder.width())/_stepWidth)+1;
					_offset = -_stepWidth*_currentStep;
					if(_offset < _sliderHolder.width()-_sumWidth) _offset = _sliderHolder.width()-_sumWidth;
				} else {
					_stepWidth = _sliderHolder.width();
					_stepCount = Math.ceil(_sumWidth/_stepWidth);
					_offset = -_stepWidth*_currentStep;
					if(_offset < _stepWidth-_sumWidth) _offset = _stepWidth-_sumWidth;
				}
			}
		}

		// gallery control
		if(_btnPrev.length) {
			_btnPrev.bind(_controlEvent,function(){
				if(_stopAfterClick) stopAutoSlide();
				prevSlide();
				return false;
			});
		}
		if(_btnNext.length) {
			_btnNext.bind(_controlEvent,function(){
				if(_stopAfterClick) stopAutoSlide();
				nextSlide();
				return false;
			});
		}
		if(_generatePagination.length) {
			_generatePagination.empty();
			recalcOffsets();
			var _list = $('<ul />');
			for(var i=0; i<_stepCount; i++) $('<li><a href="#">'+(i+1)+'</a></li>').appendTo(_list);
			_list.appendTo(_generatePagination);
			_pagerLinks = _list.children();
		}
		if(_pagerLinks.length) {
			_pagerLinks.each(function(_ind){
				jQuery(this).bind(_controlEvent,function(){
					if(_currentStep != _ind) {
						if(_stopAfterClick) stopAutoSlide();
						_currentStep = _ind;
						switchSlide();
					}
					return false;
				});
			});
		}

		// gallery animation
		function prevSlide() {
			recalcOffsets();
			if(_currentStep > 0) _currentStep--;
			else if(_circleSlide) _currentStep = _stepCount-1;
			switchSlide();
		}
		function nextSlide() {
			recalcOffsets();
			if(_currentStep < _stepCount-1) _currentStep++;
			else if(_circleSlide) _currentStep = 0;
			switchSlide();
		}
		function refreshStatus() {
			if(_pagerLinks.length) _pagerLinks.removeClass(_activeClass).eq(_currentStep).addClass(_activeClass);
			if(!_circleSlide) {
				_btnPrev.removeClass(_disabledClass);
				_btnNext.removeClass(_disabledClass);
				if(_currentStep == 0) _btnPrev.addClass(_disabledClass);
				if(_currentStep == _stepCount-1) _btnNext.addClass(_disabledClass);
			}
			if(_curNum.length) _curNum.text(_currentStep+1);
			if(_allNum.length) _allNum.text(_stepCount);
		}
		function switchSlide() {
			recalcOffsets();
			if(_vertical) _slider.animate({marginTop:_offset},{duration:_duration,queue:false,easing:_easing});
			else _slider.animate({marginLeft:_offset},{duration:_duration,queue:false,easing:_easing});
			refreshStatus();
			autoSlide();
		}

		// autoslide function
		function stopAutoSlide() {
			if(_timer) clearTimeout(_timer);
			_autoRotation = false;
		}
		function autoSlide() {
			if(!_autoRotation || _hover) 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();
			});
		}
		recalcOffsets();
		refreshStatus();
		autoSlide();

		// pause buttton
		if(_pauseButton.length) {
			_pauseButton.click(function(){
				if(_this.hasClass(_pauseClass)) {
					_this.removeClass(_pauseClass);
					_autoRotation = true;
					autoSlide();
				} else {
					_this.addClass(_pauseClass);
					stopAutoSlide();
				}
				return false;
			});
		}

		if(_afterInit && typeof _afterInit === 'function') _afterInit(_this, _slides);
	});
}