/*
	Slimbox v1.3 - The ultimate lightweight Lightbox clone
	by Christophe Beyls (http://www.digitalia.be) - MIT-style license.
	Inspired by the original Lightbox v2 by Lokesh Dhakar.
*/

var Lightbox = {

	init: function(options){
		this.options = Object.extend({
			resizeDuration: 400,
			resizeTransition: Fx.Transitions.sineInOut,
			initialWidth: 250,
			initialHeight: 250,
			txtWidth:300,
			animateCaption: true
		}, options || {});

		this.anchors = [];
		$each(document.links, function(el){
			if (el.rel && el.rel.test(/^lightbox/i)){
				el.onclick = this.click.pass(el, this);
				this.anchors.push(el);
			}
		}, this);
		this.eventKeyDown = this.keyboardListener.bindAsEventListener(this);
		this.eventPosition = this.position.bind(this);

		this.overlay = new Element('div').setProperty('id', 'lbOverlay').injectInside(document.body);

		this.center = new Element('div').setProperty('id', 'lbCenter').setStyles({width: this.options.initialWidth+'px', height: this.options.initialHeight+'px', marginLeft: '-'+(this.options.initialWidth/2)+'px', display: 'none'}).injectInside(document.body);
		this.image = new Element('div').setProperty('id', 'lbImage').injectInside(this.center);

		this.txt = new Element('div').setProperty('id', 'lbTxt').injectInside(this.center);

		this.prevLink = new Element('a').setProperties({id: 'lbPrevLink', href: '#'}).setStyle('display', 'none').injectInside(this.image);
		this.nextLink = this.prevLink.clone().setProperty('id', 'lbNextLink').injectInside(this.image);
		this.prevLink.onclick = this.previous.bind(this);
		this.nextLink.onclick = this.next.bind(this);

		this.bottomContainer = new Element('div').setProperty('id', 'lbBottomContainer').setStyle('display', 'none').injectInside(document.body);
		this.bottom = new Element('div').setProperty('id', 'lbBottom').injectInside(this.bottomContainer);

		this.overlay.onclick = this.close.bind(this);
		<!--
		// new Element('a').setProperties({id: 'lbCloseLink', href: '#'}).injectInside(this.bottom).onclick = this.overlay.onclick = this.close.bind(this);
		//-->
		this.caption = new Element('div').setProperty('id', 'lbCaption').injectInside(this.bottom);
		this.number = new Element('div').setProperty('id', 'lbNumber').injectInside(this.bottom);
		new Element('div').setStyle('clear', 'both').injectInside(this.bottom);

		var nextEffect = this.nextEffect.bind(this);
		this.fx = {
			overlay: this.overlay.effect('opacity', {duration: 500}).hide(),
			resize: this.center.effects({duration: this.options.resizeDuration, transition: this.options.resizeTransition, onComplete: nextEffect}),
			image: this.image.effect('opacity', {duration: 500, onComplete: nextEffect}),
			bottomContainerLeft: this.bottomContainer.effect('marginLeft', {duration: this.options.resizeDuration}),
			bottomContainerTop: this.bottomContainer.effect('top', {duration: this.options.resizeDuration-10}),
            bottom: this.bottom.effect('opacity', {duration: 500, onComplete: nextEffect}),
			x_bottom: this.bottom.effect('margin-top', {duration: 400, onComplete: nextEffect})
			
		};

		this.preloadPrev = new Image();
		this.preloadNext = new Image();
	},

	click: function(link){
		if (link.rel.length == 8) return this.show(link.href, link.title,link.id);

		var j, imageNum, images = [];
		this.anchors.each(function(el){
			if (el.rel == link.rel){
				for (j = 0; j < images.length; j++) if(images[j][0] == el.href) break;
				if (j == images.length){
					images.push([el.href, el.title,el.id]);
					if (el.href == link.href) imageNum = j;
				}
			}
		}, this);
		return this.open(images, imageNum);
	},

	show: function(url, title,id){
		return this.open([[url, title,id]], 0);
	},

	open: function(images, imageNum){
		this.images = images;
		this.position();
		this.setup(true);
		this.top = window.getScrollTop() + (window.getHeight() / 15)+80;
		this.center.setStyles({top: this.top+'px', display: ''});
		this.fx.overlay.start(0.8);
		return this.changeImage(imageNum);
	},

	position: function(){
		this.overlay.setStyles({top: window.getScrollTop()+'px', height: window.getHeight()+'px'});
	},

	setup: function(open){
		var elements = $A(document.getElementsByTagName('object'));
		if (window.ie) elements.extend(document.getElementsByTagName('select'));
		elements.each(function(el){ el.style.visibility = open ? 'hidden' : ''; });
		var fn = open ? 'addEvent' : 'removeEvent';
		window[fn]('scroll', this.eventPosition)[fn]('resize', this.eventPosition);
		document[fn]('keydown', this.eventKeyDown);
		this.step = 0;
	},

	keyboardListener: function(event){
		switch (event.keyCode){
			case 27: case 88: case 67: this.close(); break;
			case 37: case 80: this.previous(); break;
			case 39: case 78: this.next();
		}
	},

	previous: function(){
		return this.changeImage(this.activeImage-1);
	},

	next: function(){
		return this.changeImage(this.activeImage+1);
	},

	changeImage: function(imageNum){
		if (this.step || (imageNum < 0) || (imageNum >= this.images.length)) return false;
		this.step = 1;
		this.activeImage = imageNum;

		this.prevLink.style.display = this.nextLink.style.display = 'none';
		<!--
		// this.bottomContainer.style.display = this.prevLink.style.display = this.nextLink.style.display = 'none';
		//-->
		this.fx.image.hide();
		this.center.className = 'lbLoading';

		this.preload = new Image();
		this.preload.onload = this.nextEffect.bind(this);
		this.preload.src = this.images[imageNum][0];
		return false;
	},

	nextEffect: function(){
		switch (this.step++){
		case 1:
		    if(this.activeImage==0){
		        // hide txt
		        $('lbTxt').setStyle('visibility','hidden');
		        //
                this.loadDesc();
            }
            else{
                this.nextEffect();
            }
            break;
		case 2:
			this.center.className = '';
			this.image.style.backgroundImage = 'url('+this.images[this.activeImage][0]+')';
            //
            if(this.preload.width < parseInt(this.image.style.width)){
                this.image.style.width = this.bottom.style.width = this.preload.width+'px';
            }
            //           
            this.image.style.height = this.prevLink.style.height = this.nextLink.style.height = this.preload.height+'px';
            //
			this.caption.setHTML(this.images[this.activeImage][1] || '');
			this.number.setHTML((this.images.length == 1) ? '' : ''+(this.activeImage+1)+' / '+this.images.length);
			<!--
			// this.number.setHTML((this.images.length == 1) ? '' : 'Image '+(this.activeImage+1)+' of '+this.images.length);
			//-->
			if (this.activeImage) this.preloadPrev.src = this.images[this.activeImage-1][0];
			if (this.activeImage != (this.images.length - 1)) this.preloadNext.src = this.images[this.activeImage+1][0];
			if (this.center.clientHeight != this.image.offsetHeight){
			    var nHeight;
			    // = 550;
			    var nHeightTxt = $('lbTxt').getStyle('height').toInt();
			    if(nHeightTxt>this.image.offsetHeight){
			       nHeight = nHeightTxt;
			    }
			    else{
			       nHeight = this.image.offsetHeight;
			    }
	
				this.fx.resize.start({height: nHeight+30});
				
			    this.fx.bottomContainerTop.start(this.top + this.preload.height+20);
				<!--
				//this.fx.resize.start({height: this.image.offsetHeight});
				//-->
				break;
			}
			this.step++;
		case 3:
			if (this.center.clientWidth != this.image.offsetWidth){
			
				this.options.txtWidth = 300;
				var sID = this.images[this.activeImage][2];	
							
				if(sID.indexOf("partner")>-1 || sID.indexOf("tipps")>-1){
				    this.options.txtWidth = 500;
				}
				else if( sID.indexOf("portrait")>-1){
				    this.options.txtWidth = 470;
				}
				//
				$('lbTxt').setStyle('width',(this.options.txtWidth-5)+'px');
				//
				var nBorder = 20;
				if(this.images[this.activeImage][0].indexOf("blank.gif")>-1){
				    nBorder = 10;
				  //  $('lbImage').setStyle('borderRight','0px solid #fff');
				}
				
                var nWidth = this.preload.width+nBorder;
               // alert(this.images[this.activeImage][0]);
                var nLeft = ((($('page').getStyle('width').toInt())/2)-nWidth-this.options.txtWidth-50);
				this.fx.resize.start({width: nWidth+this.options.txtWidth, marginLeft:nLeft});
				//this.fx.resize.start({width: nWidth+this.options.txtWidth, marginLeft:((935-(nWidth+this.options.txtWidth))/2)});

                <!--
				// this.fx.resize.start({width: this.image.offsetWidth, marginLeft: -this.image.offsetWidth/2});
				//-->
                this.fx.bottomContainerLeft.start(nLeft);
                <!--
                //this.fx.bottomContainer.start(100-this.image.offsetWidth);
                //-->
				break;
			}
			this.step++;
		case 4:
			if(this.activeImage==0){
				this.bottomContainer.setStyles({top:( this.top + this.preload.height+20)+'px', height:'30px',marginLeft: this.center.style.marginLeft,display: '',opacity:'10'});		
			}

			<!--
			// this.bottomContainer.setStyles({top: (this.top + this.center.clientHeight)+'px', height: '0px', marginLeft: this.center.style.marginLeft, display: ''});
			//-->
            if(!(this.preload.width<parseInt(this.image.style.width))){
                this.image.style.width = this.bottom.style.width = this.preload.width+'px';
            }
            this.fx.image.start(0.99);
			break;
		case 5:
             if(this.activeImage==0){
				if (this.options.animateCaption){
					<!--
					//this.fx.bottom.set(-this.bottom.offsetHeight);
					//this.bottomContainer.style.height = '';
					//-->
				    this.fx.bottom.start(1);
				    //
                    $('lbTxt').setStyle('visibility','visible');
					break;
				}
                <!--
                this.bottomContainer.style.height = '';
                //--
			}
		case 6:
		       	if (this.activeImage) this.prevLink.style.display = '';
		       	if (this.activeImage != (this.images.length - 1)) this.nextLink.style.display = '';
                    //
                    // arrange next/prev-buttons
                    var perc = Math.floor(50 * ((this.preload.width+20)/(this.preload.width+20+this.options.txtWidth)));
                    this.prevLink.setStyle('width',perc+'%');
                    this.nextLink.setStyle('width',perc+'%');
                    var right = (this.preload.width+20+295)-(2*(perc/100)*(this.preload.width+20+this.options.txtWidth));
                    this.nextLink.setStyle('right',right+'px');
                    //
                    this.step = 0;
		}
	},
	close: function(){
		//
				this.txt.setHTML('');
		//
		if (this.step < 0) return;
		this.step = -1;
		if (this.preload){
			this.preload.onload = Class.empty;
			this.preload = null;
		}
		for (var f in this.fx) this.fx[f].stop();
		this.center.setStyles({width: this.options.initialWidth+'px', height: this.options.initialHeight+'px', marginLeft: '-'+(this.options.initialWidth/2)+'px'});
		this.center.style.display = this.bottomContainer.style.display = 'none';
		this.fx.overlay.chain(this.setup.pass(false, this)).start(0);

		return false;
	},
	loadDesc: function(){
	   var id = this.images[this.activeImage][2];
	   new Ajax('get_desc.php', {postBody:'id='+ id,update:'lbTxt',onComplete:this.nextEffect.bind(this)}).request();
	}
};

window.addEvent('domready', Lightbox.init.bind(Lightbox));