/*
    This file is part of JonDesign's SmoothGallery v2.0. 3.2.0

    JonDesign's SmoothGallery is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    JonDesign's SmoothGallery is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with JonDesign's SmoothGallery; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Main Developer: Jonathan Schemoul (JonDesign: http://www.jondesign.net/)
    Contributed code by:
    - Christian Ehret (bugfix)
	- Nitrix (bugfix)
	- Valerio from Mad4Milk for his great help with the carousel scrolling and many other things.
	- Archie Cowan for helping me find a bugfix on carousel inner width problem.
	- Tomocchino from #mootools for the preloader class
	Many thanks to:
	- The mootools team for the great mootools lib, and it's help and support throughout the project.
*/

// declaring the class
var gallery = {
    initialize: function (element, options) {
        this.setOptions({
            showArrows: true,
            showCarousel: true,
            showInfopane: true,
            embedLinks: true,
            fadeDuration: 500,
            timed: false,
            delay: 14000,
            preloader: true,
            preloaderImage: true,
            preloaderErrorImage: true,
            /* Data retrieval */
            manualData: [],
            populateFrom: false,
            populateData: true,
            destroyAfterPopulate: true,
            elementSelector: "div.imageElement",
            titleSelector: "h2",
            subtitleSelector: "p",
            linkSelector: "a.open",
            imageSelector: "img.full",
            thumbnailSelector: "img.thumbnail",
            defaultTransition: 'fade',
            /* InfoPane options */
            slideInfoZoneOpacity: 0.7,
            slideInfoZoneSlide: true,
            /* Carousel options */
            carouselMinimizedOpacity: 0.4,
            carouselMinimizedHeight: 20,
            carouselMaximizedOpacity: 0.9,
            thumbHeight: 75,
            thumbWidth: 100,
            thumbSpacing: 10,
            thumbIdleOpacity: 0.6,
            textShowCarousel: 'Más noticias',
            showCarouselLabel: true,
            thumbCloseCarousel: true,
            useThumbGenerator: false,
            thumbGenerator: 'resizer.php',
            useExternalCarousel: false,
            carouselElement: false,
            carouselHorizontal: true,
            activateCarouselScroller: true,
            carouselPreloader: true,
            textPreloadingCarousel: 'Loading...',
            /* CSS Classes */
            baseClass: 'jdGallery',
            withArrowsClass: 'withArrows',
            /* Plugins: HistoryManager */
            useHistoryManager: false,
            customHistoryKey: false
        }, 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);

        this.populateFrom = element;
        if (this.options.populateFrom)
            this.populateFrom = this.options.populateFrom;
        if (this.options.populateData)
            this.populateData();
        element.style.display = "block";

        if (this.options.useHistoryManager)
            this.initHistory();

        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 ((this.galleryData.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;
        var data = $A(this.galleryData);
        data.extend(this.populateGallery(this.populateFrom, currentArrayPlace));
        this.galleryData = data;
        this.fireEvent('onPopulated');
    },
    populateGallery: function (element, startNumber) {
        var data = [];
        options = this.options;
        currentArrayPlace = startNumber;
        element.getElements(options.elementSelector).each(function (el) {
            elementDict = {
                image: el.getElement(options.imageSelector).getProperty('src'),
                number: currentArrayPlace,
                transition: this.options.defaultTransition
            };
            elementDict.extend = $extend;
            if ((options.showInfopane) | (options.showCarousel))
                elementDict.extend({
                    title: el.getElement(options.titleSelector).innerHTML,
                    description: el.getElement(options.subtitleSelector).innerHTML
                });
            if (options.embedLinks)
                elementDict.extend({
                    link: el.getElement(options.linkSelector).href || false,
                    linkTitle: el.getElement(options.linkSelector).title || false,
                    linkTarget: el.getElement(options.linkSelector).getProperty('target') || false
                });
            if ((!options.useThumbGenerator) && (options.showCarousel))
                elementDict.extend({
                    thumbnail: el.getElement(options.thumbnailSelector).getProperty('src')
                });
            else if (options.useThumbGenerator)
                elementDict.extend({
                    thumbnail: options.thumbGenerator + '?imgfile=' + elementDict.image + '&max_width=' + options.thumbWidth + '&max_height=' + options.thumbHeight
                });

            data.extend([elementDict]);
            currentArrayPlace++;
            if (this.options.destroyAfterPopulate)
                el.remove();
        });
        return data;
    },
    constructElements: function () {
        el = this.galleryElement;
        this.maxIter = this.galleryData.length;
        var currentImg;
        for (i = 0; i < this.galleryData.length; i++) {
            var currentImg = new Fx.Styles(
                new Element('div').addClass('slideElement').setStyles({
                    'position': 'absolute',
                    'left': '0px',
                    'right': '0px',
                    'margin': '0px',
                    'padding': '0px',
                    'backgroundPosition': "center center",
                    'opacity': '0'
                }).injectInside(el),
                'opacity',
                {duration: this.options.fadeDuration}
            );
            if (this.options.preloader) {
                currentImg.source = this.galleryData[i].image;
                currentImg.loaded = false;
                currentImg.load = function (imageStyle) {
                    if (!imageStyle.loaded) {
                        new Asset.image(imageStyle.source, {
                            'onload': function (img) {
                                img.element.setStyle(
                                    'backgroundImage',
                                    "url('" + img.source + "')")
                                img.loaded = true;
                            }.bind(this, imageStyle)
                        });
                    }
                }.pass(currentImg, this);
            } else {
                currentImg.element.setStyle('backgroundImage',
                    "url('" + this.galleryData[i].image + "')");
            }
            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({opacity: 1});
        if (this.options.showInfopane)
            this.showInfoSlideShow.delay(1000, this);
        var textShowCarousel = formatString(this.options.textShowCarousel, this.currentIter + 1, this.maxIter);
        if (this.options.showCarousel && (!this.options.carouselPreloader))
            this.carouselBtn.setHTML(textShowCarousel).setProperty('title', textShowCarousel);
        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.preloader) {
            this.galleryElements[num].load();
            if (num == 0)
                this.galleryElements[this.maxIter - 1].load();
            else
                this.galleryElements[num - 1].load();
            if (num == (this.maxIter - 1))
                this.galleryElements[0].load();
            else
                this.galleryElements[num + 1].load();

        }
        if (this.options.embedLinks)
            this.clearLink();
        if (this.options.showInfopane) {
            this.slideInfoZone.clearChain();
            this.hideInfoSlideShow().chain(this.changeItem.pass(num, this));
        } else
            this.currentChangeDelay = this.changeItem.delay(500, this, num);
        if (this.options.embedLinks)
            this.makeLink(num);
        this.prepareTimer();
        /*if (this.options.showCarousel)
            this.clearThumbnailsHighlights();*/
    },
    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({opacity: 0});
            }
            gallery.Transitions[this.galleryData[num].transition].pass([
                this.galleryElements[this.currentIter],
                this.galleryElements[num],
                this.currentIter,
                num], this)();
            this.currentIter = num;
        }
        var textShowCarousel = formatString(this.options.textShowCarousel, num + 1, this.maxIter);
        if (this.options.showCarousel)
            this.carouselBtn.setHTML(textShowCarousel).setProperty('title', textShowCarousel);
        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;
            if (this.options.preloader)
                this.galleryElements[0].load();
        } else {
            if (this.options.showInfopane) {
                if (this.options.showInfopane) {
                    this.showInfoSlideShow.delay((500 + this.options.fadeDuration), this);
                } else if ((this.options.showCarousel) && (this.options.activateCarouselScroller))
                    this.centerCarouselOn(position);
            }
        }
    },
    createCarousel: function () {
        var carouselElement;
        if (!this.options.useExternalCarousel) {
            var carouselContainerElement = new Element('div').addClass('carouselContainer').injectInside(this.galleryElement);
            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
            }).injectInside(carouselContainerElement);
            if (this.options.carouselPreloader)
                this.carouselBtn.setHTML(this.options.textPreloadingCarousel);
            else
                this.carouselBtn.setHTML(this.options.textShowCarousel);
            this.carouselBtn.addEvent(
                'click',
                function () {
                    this.carouselContainer.clearTimer();
                    this.toggleCarousel();
                }.bind(this)
            );
            this.carouselActive = false;

            carouselElement = new Element('div').addClass('carousel').injectInside(carouselContainerElement);
            this.carousel = new Fx.Styles(carouselElement);
        } else {
            carouselElement = $(this.options.carouselElement).addClass('jdExtCarousel');
        }
        this.carouselElement = new Fx.Styles(carouselElement, {transition: Fx.Transitions.expoOut});
        this.carouselElement.normalHeight = carouselElement.offsetHeight;
        if (this.options.showCarouselLabel)
            this.carouselLabel = new Element('p').addClass('label').injectInside(carouselElement);
        carouselWrapper = new Element('div').addClass('carouselWrapper').injectInside(carouselElement);
        this.carouselWrapper = new Fx.Styles(carouselWrapper, {transition: Fx.Transitions.expoOut});
        this.carouselWrapper.normalHeight = carouselWrapper.offsetHeight;
        this.carouselInner = new Element('div').addClass('carouselInner').injectInside(carouselWrapper);
        if (this.options.activateCarouselScroller) {
            this.carouselWrapper.scroller = new Scroller(carouselWrapper, {
                area: 100,
                velocity: 0.2
            })

            this.carouselWrapper.elementScroller = new Fx.Scroll(carouselWrapper, {
                duration: 400,
                onStart: this.carouselWrapper.scroller.stop.bind(this.carouselWrapper.scroller),
                onComplete: this.carouselWrapper.scroller.start.bind(this.carouselWrapper.scroller)
            });
        }
    },
    fillCarousel: function () {
        this.constructThumbnails();
        this.carouselInner.normalWidth = ((this.maxIter * (this.options.thumbWidth + this.options.thumbSpacing + 2)) + this.options.thumbSpacing) + "px";
        this.carouselInner.style.width = this.carouselInner.normalWidth;
    },
    initCarousel: function () {
        this.createCarousel();
        this.fillCarousel();
        if (this.options.carouselPreloader)
            this.preloadThumbnails();
    },
    flushCarousel: function () {
        this.thumbnailElements.each(function (myFx) {
            myFx.element.remove();
            myFx = myFx.element = null;
        });
        this.thumbnailElements = [];
    },
    toggleCarousel: function () {
        if (this.carouselActive)
            this.hideCarousel();
        else
            this.showCarousel();
    },
    showCarousel: function () {
        this.fireEvent('onShowCarousel');
        this.carouselContainer.start({
            'opacity': this.options.carouselMaximizedOpacity,
            'top': 0
        }).chain(function () {
            this.carouselActive = true;
            this.carouselWrapper.scroller.start();
            this.fireEvent('onCarouselShown');
            this.carouselContainer.options.onComplete = null;
        }.bind(this));
    },
    hideCarousel: function () {
        this.fireEvent('onHideCarousel');
        var targetTop = this.options.carouselMinimizedHeight - this.carouselContainer.normalHeight;
        this.carouselContainer.start({
            'opacity': this.options.carouselMinimizedOpacity,
            'top': targetTop
        }).chain(function () {
            this.carouselActive = false;
            this.carouselWrapper.scroller.stop();
            this.fireEvent('onCarouselHidden');
            this.carouselContainer.options.onComplete = null;
        }.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.start(0.99);
                    if (this.options.showCarouselLabel)
                        $(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.start(this.options.thumbIdleOpacity);
                }.pass(currentImg, this),
                'click': function (myself) {
                    this.goTo(myself.relatedImage.number);
                    if (this.options.thumbCloseCarousel)
                        this.hideCarousel();
                }.pass(currentImg, this)
            });

            currentImg.relatedImage = this.galleryData[i];
            this.thumbnailElements[parseInt(i)] = currentImg;
        }
    },
    log: function (value) {
        if (console.log)
            console.log(value);
    },
    preloadThumbnails: function () {
        var thumbnails = [];
        for (i = 0; i < this.galleryData.length; i++) {
            thumbnails[parseInt(i)] = this.galleryData[i].thumbnail;
        }
        this.thumbnailPreloader = new Preloader();
        this.thumbnailPreloader.addEvent('onComplete', function () {
            var textShowCarousel = formatString(this.options.textShowCarousel, this.currentIter + 1, this.maxIter);
            this.carouselBtn.setHTML(textShowCarousel).setProperty('title', textShowCarousel);
        }.bind(this));
        this.thumbnailPreloader.load(thumbnails);
    },
    clearThumbnailsHighlights: function () {
        for (i = 0; i < this.galleryData.length; i++) {
            this.thumbnailElements[i].clearTimer();
            this.thumbnailElements[i].start(0.2);
        }
    },
    changeThumbnailsSize: function (width, height) {
        for (i = 0; i < this.galleryData.length; i++) {
            this.thumbnailElements[i].clearTimer();
            this.thumbnailElements[i].element.setStyles({
                'width': width + "px",
                'height': height + "px"
            });
        }
    },
    centerCarouselOn: function (num) {
        if (!this.carouselWallMode) {
            var carouselElement = this.thumbnailElements[num];
            var position = carouselElement.element.offsetLeft + (carouselElement.element.offsetWidth / 2);
            var carouselWidth = this.carouselWrapper.element.offsetWidth;
            var carouselInnerWidth = this.carouselInner.offsetWidth;
            var diffWidth = carouselWidth / 2;
            var scrollPos = position - diffWidth;
            try {
                this.carouselWrapper.elementScroller.scrollTo(scrollPos, 0);
            } catch (e) {
                this.carouselWrapper.elementScroller.scrollTo = (scrollPos, 0);
            }
        }
    },
    initInfoSlideshow: function () {
        /*if (this.slideInfoZone.element)
            this.slideInfoZone.element.remove();*/
        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);
        if (this.options.slideInfoZoneSlide)
            this.slideInfoZone.start({
                'opacity': [0, this.options.slideInfoZoneOpacity],
                'height': [0, this.slideInfoZone.normalHeight]
            });
        else
            this.slideInfoZone.start({'opacity': [0, this.options.slideInfoZoneOpacity]});
        if (this.options.showCarousel)
            this.slideInfoZone.chain(this.centerCarouselOn.pass(this.currentIter, this));
        return this.slideInfoZone;
    },
    hideInfoSlideShow: function () {
        this.fireEvent('onHideInfopane');
        this.slideInfoZone.clearTimer();
        if (this.options.slideInfoZoneSlide)
            this.slideInfoZone.start({'opacity': 0, 'height': 0});
        else
            this.slideInfoZone.start({'opacity': 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');
    },
    /* To change the gallery data, those two functions : */
    flushGallery: function () {
        this.galleryElements.each(function (myFx) {
            myFx.element.remove();
            myFx = myFx.element = null;
        });
        this.galleryElements = [];
    },
    changeData: function (data) {
        this.galleryData = data;
        this.clearTimer();
        this.flushGallery();
        if (this.options.showCarousel) this.flushCarousel();
        this.constructElements();
        if (this.options.showCarousel) this.fillCarousel();
        if (this.options.showInfopane) this.hideInfoSlideShow();
        this.galleryInit = 1;
        this.lastIter = 0;
        this.currentIter = 0;
        this.doSlideShow(1);
    },
    /* Plugins: HistoryManager */
    initHistory: function () {
        this.fireEvent('onHistoryInit');
        this.historyKey = this.galleryElement.id + '-picture';
        if (this.options.customHistoryKey)
            this.historyKey = this.options.customHistoryKey();
        this.history = HistoryManager.register(
            this.historyKey,
            [1],
            function (values) {
                if (parseInt(values[0]) - 1 < this.maxIter)
                    this.goTo(parseInt(values[0]) - 1);
            }.bind(this),
            function (values) {
                return [this.historyKey, '(', values[0], ')'].join('');
            }.bind(this),
            this.historyKey + '\\((\\d+)\\)');
        this.addEvent('onChanged', function () {
            this.history.setValue(0, this.currentIter + 1);
        }.bind(this));
        this.fireEvent('onHistoryInited');
    }
};
gallery = new Class(gallery);
gallery.implement(new Events);
gallery.implement(new Options);

gallery.Transitions = new Abstract({
    fade: function (oldFx, newFx, oldPos, newPos) {
        oldFx.options.transition = newFx.options.transition = Fx.Transitions.linear;
        oldFx.options.duration = newFx.options.duration = this.options.fadeDuration;
        if (newPos > oldPos) newFx.start({opacity: 1});
        else {
            newFx.set({opacity: 1});
            oldFx.start({opacity: 0});
        }
    },
    crossfade: function (oldFx, newFx, oldPos, newPos) {
        oldFx.options.transition = newFx.options.transition = Fx.Transitions.linear;
        oldFx.options.duration = newFx.options.duration = this.options.fadeDuration;
        newFx.start({opacity: 1});
        oldFx.start({opacity: 0});
    },
    fadebg: function (oldFx, newFx, oldPos, newPos) {
        oldFx.options.transition = newFx.options.transition = Fx.Transitions.linear;
        oldFx.options.duration = newFx.options.duration = this.options.fadeDuration / 2;
        oldFx.start({opacity: 0}).chain(newFx.start.pass([{opacity: 1}], newFx));
    }
});

/* All code copyright 2007 Jonathan Schemoul */

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Follows: Preloader (class)
 * Simple class for preloading images with support for progress reporting
 * Copyright 2007 Tomocchino.
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

var Preloader = new Class({

    Implements: [Events, Options],

    options: {
        root: '',
        period: 100
    },

    initialize: function (options) {
        this.setOptions(options);
    },

    load: function (sources) {
        this.index = 0;
        this.images = [];
        this.sources = this.temps = sources;
        this.total = this.sources.length;

        this.fireEvent('onStart', [this.index, this.total]);
        this.timer = this.progress.periodical(this.options.period, this);

        this.sources.each(function (source, index) {
            this.images[index] = new Asset.image(this.options.root + source, {
                'onload': function () {
                    this.index++;
                    if (this.images[index]) this.fireEvent('onLoad', [this.images[index], index, source]);
                }.bind(this),
                'onerror': function () {
                    this.index++;
                    this.fireEvent('onError', [this.images.splice(index, 1), index, source]);
                }.bind(this),
                'onabort': function () {
                    this.index++;
                    this.fireEvent('onError', [this.images.splice(index, 1), index, source]);
                }.bind(this)
            });
        }, this);
    },

    progress: function () {
        this.fireEvent('onProgress', [Math.min(this.index, this.total), this.total]);
        if (this.index >= this.total) this.complete();
    },

    complete: function () {
        $clear(this.timer);
        this.fireEvent('onComplete', [this.images]);
    },

    cancel: function () {
        $clear(this.timer);
    }

});

Preloader.implement(new Events, new Options);

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Follows: formatString (function)
 * Original name: Yahoo.Tools.printf
 * Copyright Yahoo.
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

function formatString() {
    var num = arguments.length;
    var oStr = arguments[0];
    for (var i = 1; i < num; i++) {
        var pattern = "\\{" + (i - 1) + "\\}";
        var re = new RegExp(pattern, "g");
        oStr = oStr.replace(re, arguments[i]);
    }
    return oStr;
}