/* - pgv_sg_jd.gallery.js - */
// http://artesliberales.spbu.ru/portal_javascripts/pgv_sg_jd.gallery.js?original=1
var MouseOverStatus=0;var $removeEvents=function(object,type){if(!object.events) return object;if(type){if(!object.events[type]) return object;for(var fn in object.events[type]) object.removeEvent(type,fn);object.events[type]=null} else{for(var evType in object.events) object.removeEvents(evType);object.events=null}
return object};var gallery=new Class({initialize: function(element,options){this.setOptions({showArrows:true,showCarousel:true,showInfopane:true,thumbHeight:128,thumbWidth:128,thumbSpacing:10,embedLinks:true,fadeDuration:700,thumbIdleOpacity:0.6,timed:false,delay:7000,preloader:true,manualData:[],populateData:true,elementSelector:"div.imageElement",titleSelector:"h3",subtitleSelector:"p",linkSelector:"a.open",imageSelector:"img.full",thumbnailSelector:"img.thumbnail",slideInfoZoneOpacity:0.7,carouselMinimizedOpacity:0.7,carouselMinimizedHeight:20,carouselMaximizedOpacity:0.7,destroyAfterPopulate:true,baseClass:'jdGallery',withArrowsClass:'withArrows',textShowCarousel:'Pictures',useThumbGenerator:false,thumbGenerator:'resizer.php'},options);this.fireEvent('onInit');this.currentIter=0;this.lastIter=0;this.maxIter=0;this.galleryElement=element;this.galleryData=this.options.manualData;this.galleryInit=1;this.galleryElements=Array();this.thumbnailElements=Array();this.galleryElement.addClass(this.options.baseClass);if(this.options.populateData)
this.populateData();element.style.display="block";if(this.options.embedLinks){this.currentLink=new Element('a').addClass('open').setProperties({href:'#',title:''}).injectInside(element);if((!this.options.showArrows)&&(!this.options.showCarousel))
this.galleryElement=element=this.currentLink;else
this.currentLink.setStyle('display','none')}
this.constructElements();if((data.length>1)&&(this.options.showArrows)){var leftArrow=new Element('a').addClass('left').addEvent('click',this.prevItem.bind(this)).injectInside(element);var rightArrow=new Element('a').addClass('right').addEvent('click',this.nextItem.bind(this)).injectInside(element);this.galleryElement.addClass(this.options.withArrowsClass)}
this.loadingElement=new Element('div').addClass('loadingElement').injectInside(element);if(this.options.showInfopane) this.initInfoSlideshow();if(this.options.showCarousel) this.initCarousel();this.doSlideShow(1)},populateData: function(){currentArrayPlace=this.galleryData.length;options=this.options;data=this.galleryData;this.galleryElement.getElements(options.elementSelector).each(function(el){elementDict={image:el.getElement(options.imageSelector).getProperty('src'),number:currentArrayPlace};if((options.showInfopane)|(options.showCarousel))
Object.extend(elementDict,{title:el.getElement(options.titleSelector).innerHTML,description:el.getElement(options.subtitleSelector).innerHTML});if(options.embedLinks)
Object.extend(elementDict,{link:el.getElement(options.linkSelector).href||false,linkTitle:el.getElement(options.linkSelector).title||false});if((!options.useThumbGenerator)&&(options.showCarousel))
Object.extend(elementDict,{thumbnail:el.getElement(options.thumbnailSelector).src});else if(options.useThumbGenerator)
Object.extend(elementDict,{thumbnail:'resizer.php?imgfile='+elementDict.image+'&max_width='+options.thumbWidth+'&max_height='+options.thumbHeight});data[currentArrayPlace]=elementDict;currentArrayPlace++;if(this.options.destroyAfterPopulate)
el.remove()});this.galleryData=data;this.fireEvent('onPopulated')},constructElements: function(){el=this.galleryElement;this.maxIter=this.galleryData.length;var currentImg;for(i=0;i<this.galleryData.length;i++){var currentImg=new Fx.Style(new Element('div').addClass('slideElement').setStyles({'position':'absolute','left':'0px','right':'0px','margin':'0px','padding':'0px','backgroundImage':"url('"+this.galleryData[i].image+"')",'backgroundPosition':"center center",'opacity':'0'}).injectInside(el),'opacity',{duration:this.options.fadeDuration});this.galleryElements[parseInt(i)]=currentImg}},destroySlideShow: function(element){var myClassName=element.className;var newElement=new Element('div').addClass('myClassName');element.parentNode.replaceChild(newElement,element)},startSlideShow: function(){this.fireEvent('onStart');this.loadingElement.style.display="none";this.lastIter=this.maxIter-1;this.currentIter=0;this.galleryInit=0;this.galleryElements[parseInt(this.currentIter)].set(1);if(this.options.showInfopane)
this.showInfoSlideShow.delay(1000,this);this.prepareTimer();if(this.options.embedLinks)
this.makeLink(this.currentIter)},nextItem: function(){this.fireEvent('onNextCalled');this.nextIter=this.currentIter+1;if(this.nextIter>=this.maxIter)
this.nextIter=0;this.galleryInit=0;this.goTo(this.nextIter)},prevItem: function(){this.fireEvent('onPreviousCalled');this.nextIter=this.currentIter-1;if(this.nextIter<=-1)
this.nextIter=this.maxIter-1;this.galleryInit=0;this.goTo(this.nextIter)},goTo: function(num){this.clearTimer();if(this.options.embedLinks)
this.clearLink();if(this.options.showInfopane){this.slideInfoZone.clearChain();this.hideInfoSlideShow().chain(this.changeItem.pass(num,this))} else
this.changeItem.delay(500,this,num);if(this.options.embedLinks)
this.makeLink(num);this.prepareTimer()},changeItem: function(num){this.fireEvent('onStartChanging');this.galleryInit=0;if(this.currentIter!=num){for(i=0;i<this.maxIter;i++){if((i!=this.currentIter)) this.galleryElements[i].set(0)}
if(num>this.currentIter) this.galleryElements[num].custom(1);else{this.galleryElements[num].set(1);this.galleryElements[this.currentIter].custom(0)}
this.currentIter=num}
this.doSlideShow.bind(this)();this.fireEvent('onChanged')},clearTimer: function(){if(this.options.timed)
$clear(this.timer)},prepareTimer: function(){if(this.options.timed)
this.timer=this.nextItem.delay(this.options.delay,this)},doSlideShow: function(position){if(this.galleryInit==1){imgPreloader=new Image();imgPreloader.onload=function(){this.startSlideShow.delay(10,this)}.bind(this);imgPreloader.src=this.galleryData[0].image} else{if(this.options.showInfopane){if(this.options.showInfopane){this.showInfoSlideShow.delay((500+this.options.fadeDuration),this)} else
if(this.options.showCarousel)
this.centerCarouselOn(position)}}},initCarousel: function(){var carouselContainerElement=new Element('div').addClass('carouselContainer').injectInside($('myCarousel'));this.carouselContainer=new Fx.Styles(carouselContainerElement,{transition:Fx.Transitions.expoOut});this.carouselContainer.normalHeight=carouselContainerElement.offsetHeight;this.carouselContainer.set({'opacity':this.options.carouselMinimizedOpacity,'top':(this.options.carouselMinimizedHeight-this.carouselContainer.normalHeight)});this.carouselBtn=new Element('a').addClass('carouselBtn').setProperties({title:this.options.textShowCarousel}).setHTML(this.options.textShowCarousel).injectInside(carouselContainerElement);this.carouselBtn.addEvent('click',
function(){this.carouselContainer.clearTimer();this.toggleCarousel()}.bind(this));this.carouselActive=false;var carouselElement=new Element('div').addClass('carousel').injectInside(carouselContainerElement);this.carousel=new Fx.Styles(carouselElement);this.carouselLabel=new Element('p').addClass('label').injectInside(this.carousel.element);this.carouselWrapper=new Element('div').addClass('carouselWrapper').injectInside(this.carousel.element);this.carouselInner=new Element('div').addClass('carouselInner').injectInside(this.carouselWrapper);this.carouselWrapper.scroller=new Scroller(this.carouselWrapper,{area:100,velocity:0.6})
this.carouselWrapper.elementScroller=new Fx.Scroll(this.carouselWrapper,{duration:400,onStart:this.carouselWrapper.scroller.stop.bind(this.carouselWrapper.scroller),onComplete:this.carouselWrapper.scroller.start.bind(this.carouselWrapper.scroller)});this.constructThumbnails();this.carouselInner.style.width=((this.maxIter *(this.options.thumbWidth+this.options.thumbSpacing+2))-this.options.thumbSpacing+this.options.thumbWidth)+"px"},toggleCarousel: function(){if(this.carouselActive)
this.hideCarousel();else
this.showCarousel()},showCarousel: function(){this.fireEvent('onShowCarousel');this.carouselContainer.custom({'opacity':this.options.carouselMaximizedOpacity,'top':0}).addEvent('onComplete', function(){this.carouselActive=true;this.carouselWrapper.scroller.start()}.bind(this))},hideCarousel: function(){this.fireEvent('onHideCarousel');this.carouselContainer.custom({'opacity':this.options.carouselMinimizedOpacity,'top':(this.options.carouselMinimizedHeight-this.carouselContainer.normalHeight)}).addEvent('onComplete', function(){this.carouselActive=false;this.carouselWrapper.scroller.stop()}.bind(this))},constructThumbnails: function(){element=this.carouselInner;for(i=0;i<this.galleryData.length;i++){var currentImg=new Fx.Style(new Element('div').addClass("thumbnail").setStyles({backgroundImage:"url('"+this.galleryData[i].thumbnail+"')",backgroundPosition:"center center",backgroundRepeat:'no-repeat',marginLeft:this.options.thumbSpacing+"px",width:this.options.thumbWidth+"px",height:this.options.thumbHeight+"px"}).injectInside(element),"opacity",{duration:200}).set(this.options.thumbIdleOpacity);currentImg.element.addEvents({'mouseover': function(myself){myself.clearTimer();myself.custom(0.99);$(this.carouselLabel).setHTML('<span class="number">'+(myself.relatedImage.number+1)+"/"+this.maxIter+":</span> "+myself.relatedImage.title)}.pass(currentImg,this),'mouseout': function(myself){myself.clearTimer();myself.custom(this.options.thumbIdleOpacity);$(this.carouselLabel).setHTML(' ')}.pass(currentImg,this),'click': function(myself){this.goTo(myself.relatedImage.number)}.pass(currentImg,this)});currentImg.relatedImage=this.galleryData[i];this.thumbnailElements[parseInt(i)]=currentImg}},clearThumbnailsHighlights: function(){for(i=0;i<this.galleryData.length;i++){this.thumbnailElements[i].clearTimer();this.thumbnailElements[i].custom(this.options.thumbIdleOpacity)}},centerCarouselOn: function(num){var carouselElement=this.thumbnailElements[num];var position=carouselElement.element.offsetLeft+(carouselElement.element.offsetWidth/2);var carouselWidth=this.carouselWrapper.offsetWidth;var carouselInnerWidth=this.carouselInner.offsetWidth;var diffWidth=carouselWidth/2;var scrollPos=position-diffWidth;this.carouselWrapper.onmouseover=MouseOverStatusOn;this.carouselWrapper.onmouseout=MouseOverStatusOff;
function MouseOverStatusOn(){MouseOverStatus=1}
function MouseOverStatusOff(){MouseOverStatus=0}
if(MouseOverStatus==0){this.clearThumbnailsHighlights();carouselElement.clearTimer();carouselElement.custom(99);this.carouselWrapper.elementScroller.scrollTo(scrollPos,0)}},initInfoSlideshow: function(){this.slideInfoZone=new Fx.Styles(new Element('div').addClass('slideInfoZone').injectInside($(this.galleryElement))).set({'opacity':0});var slideInfoZoneTitle=new Element('h2').injectInside(this.slideInfoZone.element);var slideInfoZoneDescription=new Element('p').injectInside(this.slideInfoZone.element);this.slideInfoZone.normalHeight=this.slideInfoZone.element.offsetHeight;this.slideInfoZone.element.setStyle('opacity',0)},changeInfoSlideShow: function(){this.hideInfoSlideShow.delay(10,this);this.showInfoSlideShow.delay(500,this)},showInfoSlideShow: function(){this.fireEvent('onShowInfopane');this.slideInfoZone.clearTimer();element=this.slideInfoZone.element;element.getElement('h2').setHTML(this.galleryData[this.currentIter].title);element.getElement('p').setHTML(this.galleryData[this.currentIter].description);this.slideInfoZone.custom({'opacity':[0,this.options.slideInfoZoneOpacity],'height':[0,this.slideInfoZone.normalHeight]});if(this.options.showCarousel)
this.slideInfoZone.chain(this.centerCarouselOn.pass(this.currentIter,this));return this.slideInfoZone},hideInfoSlideShow: function(){this.fireEvent('onHideInfopane');this.slideInfoZone.clearTimer();this.slideInfoZone.custom({'opacity':0,'height':0});return this.slideInfoZone},makeLink: function(num){this.currentLink.setProperties({href:this.galleryData[num].link,title:this.galleryData[num].linkTitle})
if(!((this.options.embedLinks)&&(!this.options.showArrows)&&(!this.options.showCarousel)))
this.currentLink.setStyle('display','block')},clearLink: function(){this.currentLink.setProperties({href:'',title:''});if(!((this.options.embedLinks)&&(!this.options.showArrows)&&(!this.options.showCarousel)))
this.currentLink.setStyle('display','none')}});gallery.implement(new Events);gallery.implement(new Options);