/*
	Slimbox v1.41 - The ultimate lightweight Lightbox clone
	by Christophe Beyls (http://www.digitalia.be) - MIT-style license.
	Inspired by the original Lightbox v2 by Lokesh Dhakar.
*/
function include(file) {
	var script  = document.createElement('script');
	script.src  = file;
	script.type = 'text/javascript';
	script.defer = true;	
	$('slimbox_thumbnails').appendChild(script);
}
// global variable
var scrollStatus = "no";

// sets scroll status to yes when scroll function is running
function startScroll() {
	scrollStatus = "yes";
}
// once scroll function is complete, sets scroll status to no
function endScroll() {
	scrollStatus = "no";
}
// moves thumbnails one thumb forward
function sb_scroll_forward(numThumbs){
	if(scrollStatus == "no") {
		// If there is a slide right button
		if ($('sb_slide_right')) {
			
			var left=$('sb_slide_images_holder').getStyle('left').toInt();
			var widthToMove = 88;
			var blah = numThumbs - 8;
			var max_scroll_right = blah * 88;
			max_scroll_right = -max_scroll_right;
			var showEnd = (blah-1) * 88;
			showEnd = -showEnd;
			if (left <= 0 && (left > max_scroll_right)) {
				$('sb_slide_images_holder').effect('left',{
					duration: 500,
					transition: Fx.Transitions.Cubic.easeInOut,
					onStart: startScroll,
					onComplete: endScroll
				}).start(left, left-widthToMove);
				$('sb_slide_left').className="";
				(left == showEnd) ? $('sb_slide_right').className="end" : $('sb_slide_right').className="";
			}
			
		} else {
		// No slide right button 
		return false;	
		}
	} else {
		return false;	
	}
}
// moves thumbnails one thumb backwards
function sb_scroll_back(){
	if(scrollStatus == "no") {
		
		// If there is a slide left button
		if ($('sb_slide_left')) {
			
			var left=$('sb_slide_images_holder').getStyle('left').toInt();
			var widthToMove = 88;
			if (left < "0") {
				$('sb_slide_images_holder').effect('left',{
					duration: 500,
					transition: Fx.Transitions.Cubic.easeInOut,
					onStart: startScroll,
					onComplete: endScroll
				}).start(left, left+widthToMove);
				$('sb_slide_right').className="";
				(left == "-88" || left == "0") ? $('sb_slide_left').className="end" : $('sb_slide_left').className="";
			}
			
		} else {
			// No slide left button
			return false;
		}
	}
}

var timer = "";
var slideshow_status = "off";

var Lightbox = {
	init: function(options){
		this.options = $extend({
			resizeDuration: 400,
			resizeTransition: false,	// default transition
			initialWidth: 250,
			initialHeight: 250,
			animateCaption: true,
			showCounter: 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', {'id': 'lbOverlay'}).injectInside(document.body);
		this.center = new Element('div', {'id': 'lbCenter', 'styles': {'width': this.options.initialWidth, 'height': this.options.initialHeight, 'marginLeft': -(this.options.initialWidth/2), 'display': 'none'}}).injectInside(document.body);
		this.thumbnails = new Element('div', {'id': 'slimbox_thumbnails'}).injectInside(document.body);
		this.eldersLogo = new Element('div', {'id': 'slimbox_logo'}).injectInside(document.body);
		if($('slide_images_slimbox')) $('slide_images_slimbox').injectInside(this.thumbnails);
		this.slideshow = new Element('div', {'id': 'slideshow'}).injectInside(document.body);
		this.startSlideshow = new Element('a', {'href': '#', 'id': 'startSlideshow'}).injectInside(this.slideshow).onclick = this.startSlideshow.bind(this);
		if($('startSlideshow')) $('startSlideshow').appendText('Start Slideshow');
		if($('slideshow')) $('slideshow').className="start";
		//if(window.ie6) include('/js/float_thumbs.js');
		this.image = new Element('div', {'id': 'lbImage'}).injectInside(this.center);
		new Element('a', {'id': 'lbCloseLink', 'href': '#'}).injectInside(this.image).onclick = this.overlay.onclick = this.close.bind(this);
		
		this.bottomContainer = new Element('div', {'id': 'lbBottomContainer', 'styles': {'display': 'none'}}).injectInside(document.body);
		this.bottom = new Element('div', {'id': 'lbBottom'}).injectInside(this.bottomContainer);
		this.prevLink = new Element('a', {'id': 'lbPrevLink', 'href': 'Javascript:void(0);'}).injectInside(this.bottom);
		this.prevLink.onclick = this.previous.bind(this);
		this.nextLink = this.prevLink.clone().setProperty('id', 'lbNextLink').injectInside(this.bottom);
		this.nextLink.onclick = this.next.bind(this);
		this.caption = new Element('div', {'id': 'lbCaption'}).injectInside(this.bottom);
		this.number = new Element('div', {'id': 'lbNumber'}).injectInside(this.bottom);
		
		new Element('div', {'styles': {'clear': 'both'}}).injectInside(this.bottom);
		
		/*** robertv - 11/11/2008 - job 8638 ***/
		this.links = new Element('div', {'id': 'lbLinks'}).injectInside(this.bottom);
		/*** end robertv - 11/11/2008 - job 8638 ***/

		var nextEffect = this.nextEffect.bind(this);
		this.fx = {
			overlay: 	this.overlay.effect('opacity', {duration: 500}).hide(),
			resize: 		this.center.effects($extend({duration: this.options.resizeDuration, onComplete: nextEffect}, this.options.resizeTransition ? {transition: this.options.resizeTransition} : {})),
			image: 		this.image.effect('opacity', {duration: 500, onComplete: nextEffect}),
			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);

		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]);
					if (el.href == link.href) imageNum = j;
				}
			}
		}, this);
		return this.open(images, imageNum);
	},

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

	open: function(images, imageNum){
		this.images = images;
		this.position();
		this.setup(true);
		this.top = window.getScrollTop() + (window.getHeight() / 6.5);
		this.center.setStyles({top: this.top, display: ''});
		this.fx.overlay.start(0.80);
		$('slimbox_thumbnails').style.display='block';
		$('slide_images_slimbox').style.display='block';
		$('slimbox_logo').style.display='block';
		if (this.images.length > "1") {
			$('slideshow').style.display='block';
		}
		//this.positionThumbsOnSlideshow();
		return this.changeImage(imageNum);
	},

	position: function(){
		this.overlay.setStyles({'top': '0px', 'height': window.getScrollHeight()});
	},

	setup: function(open){
		var elements = $A(document.getElementsByTagName('object'));
		elements.extend(document.getElementsByTagName(window.ie ? 'select' : 'embed'));
		elements.each(function(el){
			if (open) el.lbBackupStyle = el.style.visibility;
			el.style.visibility = open ? 'hidden' : el.lbBackupStyle;
		});
		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(){
		sb_scroll_back()
		return this.changeImage(this.activeImage-1);
	},

	next: function(){
		sb_scroll_forward(this.images.length);
		return this.changeImage(this.activeImage+1);
		
	},
	
	startSlideshow: function() {
		if(this.activeImage+1 == this.images.length) {
			this.activeImage = -1;
			this.startSlideshow();
			this.positionThumbsOnSlideshow();
		} else {
			slideshow_status = "on";
			$('startSlideshow').setText('Stop Slideshow');
			$('slideshow').className="stop";
			this.next();
			this.positionThumbsOnSlideshow();
			$('startSlideshow').onclick=this.stopSlideshow.bind(this);
			timer = setInterval("Lightbox.next()", 4000);
		}
	},
	
	stopSlideshow: function() {
		slideshow_status = "off";
		$clear(timer);
		$('startSlideshow').setText('Start Slideshow');
		$('slideshow').className="start";
		$('startSlideshow').onclick=this.startSlideshow.bind(this);
	},
	
	setScrollClasses: function(numThumbs) {
		
		if (numThumbs) {
			var left=$('sb_slide_images_holder').getStyle('left').toInt();
			
			// Set Left Scroll Class
			(left == "-88" || left == "0") ? $('sb_slide_left').className="end" : $('sb_slide_left').className="";
			
			// Set Right Scroll Class
			var magicNumber = numThumbs - 8;
			var showEnd = (magicNumber-1) * 88;
			showEnd = -showEnd;
			(left == showEnd) ? $('sb_slide_right').className="end" : $('sb_slide_right').className="";
		}
		
	},
	
	/* 
	 *  This method is called when the slideshow is started
	 *  If the "currently selected" thumbnail is not viewable on the screen, this method
	 *  moves the currenlty selected thumb to the very left of the screen.
	 */ 
	positionThumbsOnSlideshow: function () {
		if (this.activeImage <= (this.images.length - 9)) {
			// move active thumb to 1st pos in displayed thumbs
			var left=$('sb_slide_images_holder').getStyle('left').toInt();
			var moveTo = this.activeImage * -88;
			$('sb_slide_images_holder').effect('left',{
					duration: 600,
					transition: Fx.Transitions.Cubic.easeInOut,
					onStart: startScroll,
					onComplete: endScroll
				}).start(left, moveTo);
		} else {
			return false;	
		}
	},

	changeImage: function(imageNum,slideshow){
		if(imageNum >= this.images.length) {
			this.stopSlideshow();
		}
		if (this.step || (imageNum < 0) || (imageNum >= this.images.length)) return false;
		this.step = 1;
		this.activeImage = imageNum;
		var thumb_id_suffix_num = imageNum + 1;
		var current_thumb = "property_thumb_" + thumb_id_suffix_num + "_" + thumb_id_suffix_num;
		$(current_thumb).className="current";
		for(var i=1;i<=this.images.length;i++) {
			if (i != thumb_id_suffix_num) {
				if ($("property_thumb_" + i + "_" + i)) $("property_thumb_" + i + "_" + i).className="";	
			}
		}
		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];		
		//if (window.ie7) { event.returnValue=false; }
		return false;
	},

	nextEffect: function(){
		switch (this.step++){
		case 1:
			this.center.className = '';
			this.image.style.backgroundImage = 'url('+this.images[this.activeImage][0]+')';
			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.options.showCounter || (this.images.length == 1)) ? '' : 'Image '+(this.activeImage+1)+' of '+this.images.length);
			
			/*** robertv - 11/11/2008 - job 8638 ***/
			var link_txt = '<a href="print_photo.php?realist_id=' + realist_id + '&amp;branch_id=' + branch_id + '&amp;image=' + (this.activeImage) + '" target="_blank">Print this photo</a><br />';
			var link_txt = link_txt + '<a href="listing-pdf.php?realist_id=' + realist_id + '&amp;max_images=1" target="_blank">View brochure with photos</a>';
			this.links.setHTML(link_txt);
			/*** end robertv - 11/11/2008 - job 8638 ***/
			
			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){
				this.fx.resize.start({height: this.image.offsetHeight});
				break;
			}
			this.step++;
		case 2:
			if (this.center.clientWidth != this.image.offsetWidth){
				this.fx.resize.start({width: this.image.offsetWidth, marginLeft: -this.image.offsetWidth/2});
				break;
			}
			this.step++;
		case 3:
			this.bottomContainer.setStyles({top: this.top + this.center.clientHeight, height: 0, marginLeft: this.center.style.marginLeft, display: ''});
			this.fx.image.start(1);
			break;
		case 4:
			if (this.options.animateCaption){
				this.fx.bottom.set(-this.bottom.offsetHeight);
				this.bottomContainer.style.height = '';
				this.fx.bottom.start(0);
				break;
			}
			this.bottomContainer.style.height = '';
		case 5:
			if (this.activeImage) this.prevLink.style.display = '';
			if (this.activeImage != (this.images.length - 1)) this.nextLink.style.display = '';
			this.step = 0;
		}
	},

	close: function(){
		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.style.display = this.bottomContainer.style.display = 'none';
		$('slimbox_thumbnails').style.display='none';
		$('slide_images_slimbox').style.display='none';
		$('slideshow').style.display='none';
		$('slimbox_logo').style.display='none';
		this.fx.overlay.chain(this.setup.pass(false, this)).start(0);
		slideshow_status = "off";
		$clear(timer);
		return false;
	}
};

window.addEvent('domready', Lightbox.init.bind(Lightbox));
window.addEvent('domready', function() {
	// Change some styles for IE6	
	if (window.ie6) {
		$('slimbox_thumbnails').style.position="absolute";
		$('slimbox_logo').style.position="absolute";
		$('slideshow').style.position="absolute";
	}
});