// page init
jQuery(function() {
	initFadeOnHover();
	initSlideshow();
	initProfileGallery();
	initLogosGallery();
	initPopups();
	initOpenClose();
	initOpenSlide();
})

// init fade on hover
function initFadeOnHover(){
	jQuery('ul.visual-list').each(function(){
		var holder = jQuery(this);
		var activeClass = 'active';
		var animSpeed = 650;
		var items = holder.find('>li');
		items.each(function(){
			var item = jQuery(this);
			var box = item.find('div.text-holder').css({display:'block', opacity:0});
			item.hover(function(){
				box.css({display:'block'});
				box.stop().animate({opacity:1}, {queue:false, duration:animSpeed});
			}, function(){
				box.stop().animate({opacity:0}, {queu:false, duration:animSpeed, complete:function(){box.css({display:'none'})}});
			})
		})
	})
}

// open-close init
function initOpenClose() {
	jQuery('div.slide-block').OpenClose({
		activeClass:'open',
		opener:'a.open-close',
		slider:'div.holder',
		effect:'slide',
		animSpeed:500
	});
}

// slideshow init
function initSlideshow() {
	jQuery('.gallery').fadeGallery({
		slideElements:'.slide-list > li',
		pagerLinks:'.num-bulets ul a',
		btnNext:'.next',
		btnPrev:'.prev',
		autoRotation: true,
		switchTime: 5000,
		duration: 750
	});
	jQuery('.lightbox').fadeGallery({
		slideElements:'.slide-list > li',
		pagerLinks:'.list li',
		btnNext:'.next',
		btnPrev:'.prev',
		duration: 750
	});
	jQuery('.visual-block').each(function() {
		var visual = jQuery(this);
		var caption = visual.find('.caption');
		visual.fadeGallery({
			slideElements:'.holder > ul > li',
			btnNext:'.next',
			btnPrev:'.prev',
			duration: 750,
			currentNum:'.cur',
			allNum:'.all',
			onChange: function(gal, slides, prevIndex, currentIndex) {
				caption.text(slides.eq(currentIndex).find('img').attr('alt'));
			}
		});
	})
}


// logos gallery init
function initLogosGallery() {
	jQuery('div.gallery-block').scrollGallery({
		sliderHolder:'.frame',
		btnNext:'.next',
		btnPrev:'.prev',
		circleSlide:false,
		duration : 500
	});
}

// open slide init
function initOpenSlide() {
	var openClass = 'open';
	var animSpeed = 400;
	jQuery('.comments-box .open-close').each(function() {
		var opener = jQuery(this);
		var slider = jQuery(opener.attr('href'));
		if(!opener.hasClass(openClass)) slider.hide();
		if(slider.length) {
			opener.click(function(e) {
				if(opener.hasClass(openClass)) {
					slider.slideUp(animSpeed);
				}
				else {
					slider.slideDown(animSpeed);
				}
				opener.toggleClass(openClass);
				e.preventDefault();
			})
			slider.find('.close').click(function(e) {
				slider.slideUp(animSpeed);
				opener.removeClass(openClass);
				e.preventDefault();
			})
		}
	})
}

// profile gallery init
function initProfileGallery() {
	var animSpeed = 500;
	var activeClass = 'active';
	var disabledClass = 'disabled';
	jQuery('.area-gallery').each(function() {
		var gal = jQuery(this);
		var holder = gal.find('.gallery-box .holder');
		var slider = holder.find('>ul');
		var thumbs = slider.children();
		var btnPrevSlide = gal.find('.prev');
		var btnNextSlide = gal.find('.next');
		var text = gal.find('.info-slide');
		var len = thumbs.length;
		var thumbWidth = thumbs.eq(0).outerWidth(true);
		var arrow = gal.find('.arrow');
		
		var sliderWidth = len * thumbWidth;
		var maxMargin = sliderWidth - holder.width() - (thumbWidth - thumbs.eq(0).width());
		var count = Math.ceil(sliderWidth / holder.width());
		var size = Math.ceil(holder.width() / thumbWidth);
		
		var activeThumb = thumbs.filter('.' + activeClass);
		if(activeThumb.length) var activeIndex = thumbs.index(activeThumb);
		else var activeIndex = 0;
		
		text.eq(activeIndex).addClass(activeClass);
		arrow.css({left: thumbs.eq(activeIndex).position().left + thumbs.eq(0).width() / 2 - arrow.width() / 2});
		var animating = false;
		var index = 0;
		function switchSet() {
			animating = true;
			var margin = index * size * thumbWidth;
			if(margin > maxMargin) margin = maxMargin;
			slider.stop(true, false).animate({marginLeft: -margin}, {
				duration: animSpeed,
				complete: function() {
					moveArrow();
				}
			})
		}
		function slideNextSet() {
			if(index == count - 1) index = 0;
			else index++;
			switchSet();
		}
		function slidePrevSet() {
			if(index == 0) index = count - 1;
			else index--;
			switchSet();
		}
		function switchNextSlide() {
			if(activeIndex == len -1) {
				activeIndex = 0;
				slideNextSet();
			}
			else if(activeIndex == (index+1) * size -1) {
				activeIndex++;
				slideNextSet();
			}
			else {
				activeIndex++;
				moveArrow();
			}
			refresh();
		}
		function switchPrevSlide() {
			if(activeIndex == 0) {
				activeIndex = len -1;
				slidePrevSet();
			}
			else if(activeIndex == (index+1) * size - size) {
				activeIndex--;
				slidePrevSet();
			}
			else {
				activeIndex--;
				moveArrow();
			}
			refresh();
		}
		function refresh() {
			thumbs.removeClass(activeClass).eq(activeIndex).addClass(activeClass);
			text.removeClass(activeClass).eq(activeIndex).addClass(activeClass);
			btnNextSlide.add(btnPrevSlide).removeClass(disabledClass);
			if(activeIndex == 0) btnPrevSlide.addClass(disabledClass);
			else if(activeIndex == len - 1) btnNextSlide.addClass(disabledClass);
		}
		function moveArrow() {
			animating = true;
			arrow.stop().animate({left: thumbs.eq(activeIndex).position().left + thumbs.eq(0).width() / 2 - arrow.width() / 2}, {
				duration: animSpeed,
				complete: function() {
					animating = false;
				}
			});
		}
		btnNextSlide.click(function() {
			if(!animating) switchNextSlide();
			return false;
		})
		btnPrevSlide.click(function() {
			if(!animating) switchPrevSlide();
			return false;
		})
		thumbs.each(function(n) {
			jQuery(this).click(function() {
				activeIndex = n;
				refresh();
				moveArrow();
				return false;
			})
		})
		refresh();
	})
}

// popups function
function initPopups() {
	var _zIndex = 1000;
	var _fadeSpeed = jQuery.browser.msie && jQuery.browser.version < 9 ? 0 : 350;
	var _faderOpacity = 0.65;
	var _faderBackground = '#000';
	var _faderId = 'lightbox-overlay';
	var _closeLink = 'a.btn-close, a.close, a.cancel';
	var _fader;
	var _lightbox = null;
	var _ajaxClass = 'ajax-load';
	var _openers = jQuery('a.open-popup');
	var _page = jQuery(document);
	var _minWidth = parseInt(jQuery('body').css('minWidth'));
	var _scroll = false;

	// init popup fader
	_fader = jQuery('#'+_faderId);
	if(!_fader.length) {
		_fader = jQuery('<div />');
		_fader.attr('id',_faderId);
		jQuery('body').append(_fader);
	}
	_fader.css({
		opacity:_faderOpacity,
		backgroundColor:_faderBackground,
		position:'absolute',
		overflow:'hidden',
		display:'none',
		top:0,
		left:0,
		zIndex:_zIndex
	});

	// IE6 iframe fix
	if(jQuery.browser.msie && jQuery.browser.version < 7) {
		if(!_fader.children().length) {
			var _frame = jQuery('<iframe src="javascript:false" frameborder="0" scrolling="no" />');
			_frame.css({
				opacity:0,
				width:'100%',
				height:'100%'
			});
			var _frameOverlay = jQuery('<div>');
			_frameOverlay.css({
				top:0,
				left:0,
				zIndex:1,
				opacity:0,
				background:'#000',
				position:'absolute',
				width:'100%',
				height:'100%'
			});
			_fader.empty().append(_frame).append(_frameOverlay);
		}
	}

	// lightbox positioning function
	function positionLightbox() {
		if(_lightbox) {
			var _windowHeight = jQuery(window).height();
			var _windowWidth = jQuery(window).width();
			var _lightboxWidth = _lightbox.outerWidth();
			var _lightboxHeight = _lightbox.outerHeight();
			var _pageHeight = _page.height();

			if (_windowWidth < _minWidth) _fader.css('width',_minWidth);
				else _fader.css('width','100%');
			if (_windowHeight < _pageHeight) _fader.css('height',_pageHeight);
				else _fader.css('height',_windowHeight);

			_lightbox.css({
				position:'absolute',
				zIndex:(_zIndex+1)
			});

			// vertical position
			if (_windowHeight > _lightboxHeight) {
				if (_windowWidth < _minWidth || jQuery.browser.msie && jQuery.browser.version < 7) {
					_lightbox.css({
						position:'absolute',
						top: parseInt(jQuery(window).scrollTop()) + (_windowHeight - _lightboxHeight) / 2
					});
				} else {
					_lightbox.css({
						position:'fixed',
						top: (_windowHeight - _lightboxHeight) / 2
					});
				}
			} else {
				var _faderHeight = _fader.height();
				if(_faderHeight < _lightboxHeight) _fader.css('height',_lightboxHeight);
				if (!_scroll) {
					if (_faderHeight - _lightboxHeight > parseInt(jQuery(window).scrollTop())) {
						_faderHeight = parseInt(jQuery(window).scrollTop())
						_scroll = _faderHeight;
					} else {
						_scroll = _faderHeight - _lightboxHeight;
					}
				}
				_lightbox.css({
					position:'absolute',
					top: _scroll
				});
			}

			// horizontal position
			if (_fader.width() > _lightbox.outerWidth()) _lightbox.css({left:(_fader.width() - _lightbox.outerWidth()) / 2});
			else _lightbox.css({left: 0});
		}
	}

	// show/hide lightbox
	function toggleState(_state) {
		if(!_lightbox) return;
		if(_state) {
			_fader.fadeIn(_fadeSpeed,function(){
				_lightbox.fadeIn(_fadeSpeed);
			});
			_scroll = false;
			positionLightbox();
		} else {
			_lightbox.fadeOut(_fadeSpeed,function(){
				_fader.fadeOut(_fadeSpeed);
				_scroll = false;
			});
		}
	}

	// popup actions
	function initPopupActions(_obj) {
		if(!_obj.get(0).jsInit) {
			_obj.get(0).jsInit = true;
			// close link
			_obj.find(_closeLink).click(function(){
				_lightbox = _obj;
				toggleState(false);
				return false;
			});
		}
	}

	// lightbox openers
	_openers.each(function(){
		var _opener = jQuery(this);
		var _target = _opener.attr('href');

		// popup load type - ajax or static
		if(_opener.hasClass(_ajaxClass)) {
			_opener.click(function(){
				// ajax load
				if(jQuery('div[rel*="'+_target+'"]').length == 0) {
					jQuery.ajax({
						url: _target,
						type: "POST",
						dataType: "html",
						success: function(msg){
							// append loaded popup
							_lightbox = jQuery(msg);
							_lightbox.find('img').load(positionLightbox)
							_lightbox.attr('rel',_target).hide().css({
								position:'absolute',
								zIndex:(_zIndex+1),
								top: -9999,
								left: -9999
							});
							jQuery('body').append(_lightbox);

							// init js for lightbox
							initPopupActions(_lightbox);

							// show lightbox
							toggleState(true);
						},
						error: function(msg){
							alert('AJAX error!');
							return false;
						}
					});
				} else {
					_lightbox = jQuery('div[rel*="'+_target+'"]');
					toggleState(true);
				}
				return false;
			});
		} else {
			if(jQuery(_target).length) {
				// init actions for popup
				var _popup = jQuery(_target);
				initPopupActions(_popup);
					// open popup
					_opener.click(function(){
					if(_lightbox) {
						_lightbox.fadeOut(_fadeSpeed,function(){
							_lightbox = _popup.hide();
							toggleState(true);
						})
					} else {
						_lightbox = _popup.hide();
						toggleState(true);
					}
					return false;
				});
			}
		}
	});

	// event handlers
	jQuery(window).resize(positionLightbox);
	jQuery(window).scroll(positionLightbox);
	jQuery(document).keydown(function (e) {
		if (!e) evt = window.event;
		if (e.keyCode == 27) {
			toggleState(false);
		}
	})
	_fader.click(function(){
		if(!_fader.is(':animated')) toggleState(false);
		return false;
	})
}

// open-close plugin
jQuery.fn.OpenClose = function(_options){
	// default options
	var _options = jQuery.extend({
		activeClass:'active',
		opener:'.opener',
		slider:'.slide',
		animSpeed: 400,
		animStart:false,
		animEnd:false,
		effect:'fade',
		event:'click'
	},_options);

	return this.each(function(){
		// options
		var _holder = jQuery(this);
		var _slideSpeed = _options.animSpeed;
		var _activeClass = _options.activeClass;
		var _opener = jQuery(_options.opener, _holder);
		var _slider = jQuery(_options.slider, _holder);
		var _animStart = _options.animStart;
		var _animEnd = _options.animEnd;
		var _effect = _options.effect;
		var _event = _options.event;
		if(_slider.length) {
			_opener.bind(_event,function(){
				if(!_slider.is(':animated')) {
					if(typeof _animStart === 'function') _animStart();
					if(_holder.hasClass(_activeClass)) {
						_slider[_effect=='fade' ? 'fadeOut' : 'slideUp'](_slideSpeed,function(){
							if(typeof _animEnd === 'function') _animEnd();
						});
						_holder.removeClass(_activeClass);
					} else {
						_holder.addClass(_activeClass);
						_slider[_effect=='fade' ? 'fadeIn' : 'slideDown'](_slideSpeed,function(){
							if(typeof _animEnd === 'function') _animEnd();
						});
					}
				}
				return false;
			});
			if(_holder.hasClass(_activeClass)) _slider.show();
			else _slider.hide();
		}
	});
}

// slideshow plugin
jQuery.fn.fadeGallery = function(_options){
	var _options = jQuery.extend({
		slideElements:'div.slideset > div',
		pagerLinks:'div.pager a',
		btnNext:'a.next',
		btnPrev:'a.prev',
		btnPlayPause:'a.play-pause',
		btnPlay:'a.play',
		btnPause:'a.pause',
		pausedClass:'paused',
		disabledClass: '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,
		switchTime:3000,
		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 _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 _disabledClass = _options.disabledClass;
		var _pausedClass = _options.pausedClass;
		var _playClass = _options.playClass;
		var _autoHeight = _options.autoHeight;
		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 _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);

		// gallery control
		if(_btnPrev.length) {
			_btnPrev.bind(_controlEvent,function(){
				prevSlide();
				return false;
			});
		}
		if(_btnNext.length) {
			_btnNext.bind(_controlEvent,function(){
				nextSlide();
				return false;
			});
		}
		if(_pagerLinks.length) {
			_pagerLinks.each(function(_ind){
				jQuery(this).bind(_controlEvent,function(){
					if(_currentIndex != _ind) {
						if(_disableWhileAnimating && _anim) return;
						_prevIndex = _currentIndex;
						_currentIndex = _ind;
						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(_disabledClass);
					else _btnPrev.removeClass(_disabledClass);
				}
				if(_btnNext.length) {
					if(_currentIndex == _slideCount-1) _btnNext.addClass(_disabledClass);
					else _btnNext.removeClass(_disabledClass);
				}
			}
			if(typeof _onChange === 'function') {
				_onChange(_this, _slides, _prevIndex, _currentIndex);
			}
		}
		if(_autoHeight) _slides.eq(_currentIndex).parent().css({height:_slides.eq(_currentIndex).outerHeight(true)});
		function switchSlide() {
			_anim = true;
			if(typeof _onBeforeFade === 'function') _onBeforeFade(_this, _slides, _prevIndex, _currentIndex);
			_slides.eq(_prevIndex).stop(false, true).fadeOut(_duration,function(){
				_anim = false;
			});
			_slides.eq(_currentIndex).stop(false, true).fadeIn(_duration,function(){
				if(typeof _onAfterFade === 'function') _onAfterFade(_this, _slides, _prevIndex, _currentIndex);
			});
			if(_autoHeight) _slides.eq(_currentIndex).parent().stop().animate({height:_slides.eq(_currentIndex).outerHeight(true)},{duration:_duration,queue:false});
			refreshStatus();
			autoSlide();
		}

		// autoslide function
		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();
			});
		}
		refreshStatus();
		autoSlide();
	});
}

// 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',
		splitCount:false,
		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;
		var _splitCount = _options.splitCount;

		// gallery init
		if(!_slides.length) return;

		if(_splitCount) {
			var curStep = 0;
			var newSlide = $('<slide>').addClass('split-slide');
			_slides.each(function(){
				newSlide.append(this);
				curStep++;
				if(curStep > _splitCount-1) {
					curStep = 0;
					_slider.append(newSlide);
					newSlide = $('<slide>').addClass('split-slide');
				}
			});
			if(curStep) _slider.append(newSlide);
			_slides = _slider.children();
		}

		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);
	});
}

// mobile browsers detect
browserPlatform = {
	platforms: [
		{ uaString:['symbian','midp'], cssFile:'symbian.css' }, // Symbian phones
		{ uaString:['opera','mobi'], cssFile:'opera.css' }, // Opera Mobile
		{ uaString:['msie','ppc'], cssFile:'ieppc.css' }, // IE Mobile <6
		{ uaString:'iemobile', cssFile:'iemobile.css' }, // IE Mobile 6+
		{ uaString:'webos', cssFile:'webos.css' }, // Palm WebOS
		{ uaString:'Android', cssFile:'android.css' }, // Android
		{ uaString:['BlackBerry','/6.0','mobi'], cssFile:'blackberry6.css' },	// Blackberry 6
		{ uaString:['BlackBerry','/7.0','mobi'], cssFile:'blackberry7.css' },	// Blackberry 7+
		{ uaString:'ipad', cssFile:'ipad.css', miscHead:'<meta name="viewport" content="width=device-width" />' }, // iPad
		{ uaString:['safari','mobi'], cssFile:'safari.css', miscHead:'<meta name="viewport" content="width=device-width" />' } // iPhone and other webkit browsers
	],
	options: {
		cssPath:'http://www.twintechs.com/wp-content/themes/twintechnologies/',
		mobileCSS:'allmobile.css'
	},
	init:function(){
		this.checkMobile();
		this.parsePlatforms();
		return this;
	},
	checkMobile: function() {
		if(this.uaMatch('mobi') || this.uaMatch('midp') || this.uaMatch('ppc') || this.uaMatch('webos')) {
			this.attachStyles({cssFile:this.options.mobileCSS});
		}
	},
	parsePlatforms: function() {
		for(var i = 0; i < this.platforms.length; i++) {
			if(typeof this.platforms[i].uaString === 'string') {
				if(this.uaMatch(this.platforms[i].uaString)) {
					this.attachStyles(this.platforms[i]);
					break;
				}
			} else {
				for(var j = 0, allMatch = true; j < this.platforms[i].uaString.length; j++) {
					if(!this.uaMatch(this.platforms[i].uaString[j])) {
						allMatch = false;
					}
				}
				if(allMatch) {
					this.attachStyles(this.platforms[i]);
					break;
				}
			}
		}
	},
	attachStyles: function(platform) {
		var head = document.getElementsByTagName('head')[0], fragment;
		var cssText = '<link rel="stylesheet" href="' + this.options.cssPath + platform.cssFile + '" type="text/css"/>';
		var miscText = platform.miscHead;
		if(platform.cssFile) {
			if(document.body) {
				fragment = document.createElement('div');
				fragment.innerHTML = cssText;
				head.appendChild(fragment.childNodes[0]);
			} else {
				document.write(cssText);
			}
		}
		if(platform.miscHead) {
			if(document.body) {
				fragment = document.createElement('div');
				fragment.innerHTML = miscText;
				head.appendChild(fragment.childNodes[0]);
			} else {
				document.write(miscText);
			}
		}
	},
	uaMatch:function(str) {
		if(!this.ua) {
			this.ua = navigator.userAgent.toLowerCase();
		}
		return this.ua.indexOf(str.toLowerCase()) != -1;
	}
}.init();