/* mooShow 1.04
 * (c)2006 Stuart Eaton - http://www.eatpixels.com

 * Credit where credit is due: Inspiration from Lightbox (http://www.huddletogether.com/projects/lightbox2/)
 * and Couloir (http://www.couloir.org/js_slideshow/) and of course moo.fx (http://moofx.mad4milk.net/
 * moo.fx and prototype are covered by their own respective license terms.
 */

var mooLoadImage = "images/slideshow/loading.gif";
var mooShows = null;

	
function start() {
	// Find any mooshows on the page
	find_mooshows();
}

function find_mooshows() {
	shows = document.getElementsByClassName("mooshow"); // find divs using the 'mooshow' class
	if(shows.length == 0) shows = showsIE; // If can't find shows list get it from html page (hack for IE5.5)
	mooShows = new Object();
	for ( var i = 0; i < shows.length; i++ ) {
		showName = shows[i].id; // get shownames
		if(showName==null) showName = shows[i]; // if we are getting show names from the html page (hack for IE5.5)
		mooShows[ showName ] = new mooshow(showName); // create new mooshow objects
		create_mooshow(showName,i); // create the shows htmls
	}
}

function create_mooshow( showName,shownumber ) {
	eval($(showName).innerHTML); //get slideshow settings
	photoArray = eval(showName); // set up image array based on id
	shownumber++; // add 1 to shownumber so it starts on 1 not 0
	
	if(this.dropShadow=='yes'){
		this.outerContainerClass = 'mooshow_outerContainer dropShadowBorder';
	} else {
		this.outerContainerClass = 'mooshow_outerContainer';
	}

	var mooShow_html = ''+
	'<div id=\''+showName+'_outerContainer\' class=\''+this.outerContainerClass+'\' style=\'padding:'+this.border+'px;\'> \n'+
	'	<div id=\''+showName+'_contentContainer\' class=\'mooshow_contentContainer\' > \n'+
	'		<img src=\''+photoArray[0][0]+'\' class=\'mooshow_image\' width=\''+photoArray[0][1]+'\' height=\''+photoArray[0][2]+'\' id=\''+showName+'_image\' /> \n'+
	'		<img src=\''+mooLoadImage+'\' id=\''+showName+'_loading\' class=\'mooshow_loading\' /> \n'+
	'		<div id=\''+showName+'_copyright\' class=\'mooshow_copyright\'></div> \n'+
	'		<div id=\''+showName+'_overlayNav\' class=\'mooshow_overlayNav\' style=\'height:'+photoArray[0][2]+'px; width:'+photoArray[0][1]+'px;\'> \n'+
	'			<a href=\'#'+shownumber+'\' id=\''+showName+'_prevLink\' class=\'mooshow_prevLink\' onClick=\'mooShows[&#39;'+showName+'&#39;].prevImage();\' ></a> \n'+
	'			<a href=\'#'+shownumber+'\' id=\''+showName+'_nextLink\' class=\'mooshow_nextLink\' onClick=\'mooShows[&#39;'+showName+'&#39;].nextImage();\' ></a> \n'+
	'		</div> \n'+
	'	</div> \n'+
	'	<div id=\''+showName+'_extras\' class=\'mooshow_extras\'> \n'+
	'		<div id=\''+showName+'_captions\' class=\'mooshow_captions\' style=\'padding-top:'+this.border+'px;padding-left:-'+this.border+'px; width:'+photoArray[0][1]+'px;\'>'+photoArray[0][7]+'&nbsp;</div> \n'+
	'		<div id=\''+showName+'_temp\' class=\'mooshow_temp\'></div> \n'+
	'	</div> \n'+
	'</div> \n'+
	'<a id=\'magnify\' href='+photoArray[0][8]+' rel=\'lightbox\' title=\'View Larger\'>View Larger</a> \n'+
	'<div id=\''+showName+'_topNav\' class=\'mooshow_topNav\'></div> \n'+
	'<script></script>';

	Element.setInnerHTML(showName, mooShow_html);
	
	// display or hide various options
	if(this.topNav == 'no') {Element.hide(showName+'_topNav');} else {mooShows[showName].updateTopNav(showName);}
	if(this.overlayNav == 'no') Element.hide(showName+'_overlayNav');
	if(this.captions == 'no') Element.hide(showName+'_captions');
	if(this.copyright == 'yes') Element.setInnerHTML(showName+'_copyright', photoArray[0][6]);

	Element.show(showName);
}

var mooshow = Class.create();
mooshow.prototype = {

	initialize: function(showName) {
		this.id = showName;
		this.busy = 0;
		this.counter = 0;
		this.photoArray = eval(this.id);
		this.numberOfImages = this.photoArray.length -2;
		this.IPTCinfoStatus = 0;
		eval($(showName).innerHTML); //get slideshow settings (set inside the mooshow div)
	},

	nextImage: function() {
		if(this.busy<1){
			this.busy=1;
			if(this.counter < this.numberOfImages) {
				this.counter ++;
			} else {
				this.counter = 0;
			}
			this.loadImage();
		}
	},
	
	prevImage: function() {
		if(this.busy<1){
			this.busy=1;
			if(this.counter > 0) {
				this.counter --;
			} else {
				this.counter = this.numberOfImages;
			}
			this.loadImage();			
		}
	},
	
	jumptoImage: function(counter) {
		if(this.busy<1){
			this.busy=1;
			this.counter = counter-1;
			this.loadImage();		
		}
	},
	
	switchContent: function(newArray) {
		if(this.busy<1){
			this.busy=1;
			this.photoArray = eval(newArray);
			this.numberOfImages = this.photoArray.length -2;
			this.counter = 0;
			this.loadImage();		
		}
	},
	
	updateTopNav: function(showName) {
		Element.setInnerHTML(showName+'_topNav', '');
		this.topNavContent = $(showName+'_topNav').innerHTML;
		
		this.topNavContent = this.topNavContent + '<ul>\n';
		
		for ( var i = 1; i < this.photoArray.length; i++ ) {
			if (i==this.counter+1) {
				this.topNavContent = this.topNavContent + ' <li class=\'active\'>'+i+'</li>';
			} else {
				this.topNavContent = this.topNavContent + ' <li><a href=\'#'+i+'\' onClick=\'mooShows[&#39;'+showName+'&#39;].jumptoImage('+i+');\'>'+i+'</a></li>';
			}
		}
		
		this.topNavContent = this.topNavContent + '</ul>\n';
		
		document.getElementById(showName+'_topNav').innerHTML = this.topNavContent;
	},
	
	updateMagnify: function() {
		Element.setHref('magnify', this.photoArray[this.counter][8]);
	},

	loadImage: function() {
		//get showname
		showName = this.id;

		// update top navigation
		if(this.topNav=='yes') { this.updateTopNav(showName); this.updateMagnify(); }
		// show laoding animation
		Element.show(showName+'_loading');
		// overlay navigation
		if(this.overlayNav == 'yes')Element.hide(showName+'_overlayNav');
		// preload in new image
		newImgPreloader = new Image();
		// if image is preloaded
		newImgPreloader.onload=function(){
			// when loaded
			// hide current photo
			Element.setSrc(showName+'_image','images/slideshow/blank.gif');
			Element.setOpacity(showName+'_image',0);
			// hide laoding animation
			Element.hide(showName+'_loading');
			// set captions to blank space
			Element.setInnerHTML(showName+'_captions', '&nbsp;');
			// set copyright to blank
			Element.setInnerHTML(showName+'_copyright', '');
			// get new sizes
			newHeight = newImgPreloader.height;
			newWidth = newImgPreloader.width;
			// resize containers to new size
			this.resizeCaptionWidth = new fx.Width(showName+'_captions', {duration: mooShows[showName].speed});
			this.resizeOuterContainerHeight = new fx.Height(showName+'_image', {duration: mooShows[showName].speed});
			this.resizeOuterContainerWidth = new fx.Width(showName+'_image', {duration: mooShows[showName].speed, onComplete: function() {
				// set up next image
				Element.setSrc(showName+'_image',newImgPreloader.src);
				// reposition overlay nav
				Element.setHeight(showName+'_overlayNav',(newImgPreloader.height));
				Element.setWidth(showName+'_overlayNav',(newImgPreloader.width));
				//show captions
				if(mooShows[showName].captions=='yes') Element.setInnerHTML(showName+'_captions', mooShows[showName].photoArray[mooShows[showName].counter][7] + '&nbsp;');
				// copyright
				if(mooShows[showName].copyright == 'yes') Element.setInnerHTML(showName+'_copyright', mooShows[showName].photoArray[mooShows[showName].counter][6]);
				// new moo.fx 'fader'
				this.fader = new fx.Opacity(showName+'_image', {duration: mooShows[showName].fadeSpeed, onComplete:function() { 
					mooShows[showName].busy = 0;
					// overlay navigation
					if(mooShows[showName].overlayNav == 'yes') Element.show(showName+'_overlayNav');
					}});
				// call fader fx
				this.fader.hide(); this.fader.toggle();
			}});
			
			// get current sizes
			oldHeight = Element.getHeight(showName+'_image');
			oldWidth = Element.getWidth(showName+'_image');

			// call moo.fx and when done switchImage()
			this.resizeCaptionWidth.custom(oldWidth,newWidth);
			this.resizeOuterContainerHeight.custom(oldHeight,newHeight);
			this.resizeOuterContainerWidth.custom(oldWidth,newWidth);
		};
		
		newImgPreloader.src = this.photoArray[this.counter][0]; // preloader src
	}
}

// -----------------------------------------------------------------------------------
//	Additional methods for Element by SU, Couloir
//	- further additions by Lokesh Dhakar (huddletogether.com)
//	- and Stuart Eaton (eatpixels.com)

Object.extend(Element, {
	getWidth: function(element) {
	   	element = $(element);
	   	return element.offsetWidth; 
	},
	
	getHeight: function(element) {
	   	element = $(element);
	   	return element.offsetHeight; 
	},
	

	setWidth: function(element,w) {
	   	element = $(element);
    	element.style.width = w +"px";
	},
	setHeight: function(element,h) {
   		element = $(element);
    	element.style.height = h +"px";
	},
	setTop: function(element,t) {
	   	element = $(element);
    	element.style.top = t +"px";
	},
	setSrc: function(element,src) {
    	element = $(element);
    	element.src = src; 
	},
	
	setAlt: function(element,alt) {
    	element = $(element);
    	element.alt = alt; 
	},
	
	setOpacity: function(element,opacity) {
    	element = $(element);
    	element.style.opacity = opacity; 
	},

	setHref: function(element,href) {
    	element = $(element);
    	element.href = href; 
	},
	setInnerHTML: function(element,content) {
		element = $(element);
		element.innerHTML = content;
	},

	hide: function(element) {
      	element = $(element);
      	element.style.display = 'none';
  	},

  	show: function(element) {
      	element = $(element);
      	element.style.display = 'inline';
  	}
});

/*
 * addLoadEvent()
 * Adds event to window.onload without overwriting currently assigned onload functions.
 * Function found at Simon Willison's weblog - http://simon.incutio.com/
*/
function addLoadEvent(func) {	
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
    	window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

function run() {
	start();
}

addLoadEvent(run);	// run initMooshow onLoad