//** DD Drop Down Panel- (c) Dynamic Drive DHTML code library: http://www.dynamicdrive.com
//** Dec 7th, 08'- Script created (Requires jquery 1.2.x)

var simpleGallery_navpanel = {
panel: { border: '0px', background: 'url(Images/Image_01.jpg)', width: '27px', height: '260px', paddingLeft: '350px', fontStyle: 'bold 11px Verdana' }, //customize nav panel container
    images: ['Images/BannerAction_Previous.png', 'Images/BannerAction_Play.png', 'Images/BannerAction_Next.png', 'Images/BannerAction_Pause.png']//, //nav panel images (in that order)
    //images: [ 'Images/left.gif', 'Images/play.gif', 'Images/right.gif', 'Images/pause.gif'] //nav panel images (in that order)
    //imageSpacing: { offsetTop: [-4, 0, -4], spacing: 10 }//, //top offset of left, play, and right images, PLUS spacing between the 3 images
    //slideduration: 500 //duration of slide up animation to reveal panel
}

function simpleGallery(settingarg) {
    this.setting = settingarg
    settingarg = null
    var setting = this.setting
    //setting.pause = parseInt(setting.pause)
    setting.fadeduration = parseInt(setting.fadeduration)
    setting.curimage = (setting.persist) ? simpleGallery.routines.getCookie("gallery-" + setting.wrapperid) : 0
    setting.curimage = setting.curimage || 0 //account for curimage being null if cookie is empty
    setting.ispaused = !setting.autoplay //ispaused reflects current state of gallery, autoplay indicates whether gallery is set to auto play
    setting.fglayer = 0, setting.bglayer = 1 //index of active and background layer (switches after each change of slide)
    setting.oninit = setting.oninit || function() { }
    setting.onslide = setting.onslide || function() { }
    var preloadimages = [] //temp array to preload images
    for (var i = 0; i < setting.imagearray.length; i++) {
        preloadimages[i] = new Image()
        preloadimages[i].src = setting.imagearray[i][0]
    }
    var slideshow = this
    jQuery(document).ready(function($) {
        var setting = slideshow.setting
        setting.$wrapperdiv = $('#' + setting.wrapperid).css({ position: 'relative', visibility: 'visible', background: 'white', overflow: 'visible', width: setting.dimensions[0], height: setting.dimensions[-1] }).empty() //main gallery DIV
        if (setting.$wrapperdiv.length == 0) { //if no wrapper DIV found
            alert("Error: DIV with ID \"" + setting.wrapperid + "\" not found on page.")
            return
        }
        setting.$gallerylayers = $('<div class="gallerylayer"></div><div class="gallerylayer"></div>') //two stacked DIVs to display the actual slide 
			.css({ position: 'absolute', left: 0, top: 0 })
			.appendTo(setting.$wrapperdiv)
        setting.gallerylayers = setting.$gallerylayers.get() //cache stacked DIVs as DOM objects
        setting.navbuttons = simpleGallery.routines.addnavpanel(setting) //get 4 nav buttons DIVs as DOM objects
        $(setting.navbuttons).filter('img.navimages')
			.bind('mouseover mouseout', function(e) {			    
			})
			.bind('click', function(e) {
			    var keyword = e.target.title.toLowerCase()
			    slideshow.navigate(keyword) //assign behavior to nav images
			})
		slideshow.showhidenavpanel('show')
        setting.$wrapperdiv.bind('mouseenter', function() { slideshow.showhidenavpanel('show') })
        setting.$wrapperdiv.bind('mouseleave', function() { slideshow.showhidenavpanel('show') })
        slideshow.showslide(setting.curimage) //show initial slide
        setting.oninit() //trigger oninit() event
        $(window).bind('unload', function() { //clean up and persist
            $(slideshow.setting.navbuttons).unbind()
            if (slideshow.setting.persist) //remember last shown image's index
                simpleGallery.routines.setCookie("gallery-" + setting.wrapperid, setting.curimage)
            jQuery.each(slideshow.setting, function(k) {
                if (slideshow.setting[k] instanceof Array) {
                    for (var i = 0; i < slideshow.setting[k].length; i++) {
                        if (slideshow.setting[k][i].tagName == "DIV")
                            slideshow.setting[k][i].innerHTML = null
                        slideshow.setting[k][i] = null
                    }
                }
                slideshow.setting[k] = null
            })
            slideshow = slideshow.setting = null
        })
    })
}

simpleGallery.prototype = {

    navigate: function(keyword) {
        clearTimeout(this.setting.playtimer)
        if (!isNaN(parseInt(keyword))) {
            this.showslide(parseInt(keyword))
        }
        else if (/(prev)|(next)/i.test(keyword)) {
            this.showslide(keyword.toLowerCase())
        }
        else { //if play|pause button
            var slideshow = this
            var $playbutton = $(this.setting.navbuttons).eq(1)
            if (!this.setting.ispaused) { //if pause Gallery
                this.setting.autoplay = false
                $playbutton.attr({ title: 'Play', src: simpleGallery_navpanel.images[1] })
            }
            else if (this.setting.ispaused) { //if play Gallery
                this.setting.autoplay = true
                this.setting.playtimer = setTimeout(function() { slideshow.showslide('next') }, this.setting.pause)
                $playbutton.attr({ title: 'Pause', src: simpleGallery_navpanel.images[3] })
            }
            slideshow.setting.ispaused = !slideshow.setting.ispaused
        }
    },

    showslide: function(keyword) {
        var slideshow = this
        var setting = slideshow.setting
        var totalimages = setting.imagearray.length
        var imgindex = (keyword == "next") ? (setting.curimage < totalimages - 1 ? setting.curimage + 1 : 0)
			: (keyword == "prev") ? (setting.curimage > 0 ? setting.curimage - 1 : totalimages - 1)
			: Math.min(keyword, totalimages - 1)
        setting.gallerylayers[setting.bglayer].innerHTML = simpleGallery.routines.getSlideHTML(setting.imagearray[imgindex])
        setting.$gallerylayers.eq(setting.bglayer).css({ zIndex: 0, opacity: 0 }) //background layer becomes foreground
			.stop().css({ opacity: 0 }).animate({ opacity: 1 }, setting.fadeduration, function() { //Callback function after fade animation is complete:
			    clearTimeout(setting.playtimer)
			    setting.gallerylayers[setting.bglayer].innerHTML = ''  //empty bglayer (previously fglayer before setting.fglayer=setting.bglayer was set below)
			    try {
			        setting.onslide(setting.gallerylayers[setting.fglayer], setting.curimage)
			    } catch (e) {
			        alert("Simple Controls Gallery: An error has occured somwhere in your code attached to the \"onslide\" event: " + e)
			    }
			    if (setting.autoplay) {
			        setting.playtimer = setTimeout(function() { slideshow.showslide('next') }, setting.pause)
			    }
			})
        setting.gallerylayers[setting.fglayer].style.zIndex = 1 //foreground layer becomes background
        setting.fglayer = setting.bglayer
        setting.bglayer = (setting.bglayer == 0) ? 1 : 0
        setting.curimage = imgindex        
        setting.navbuttons.innerHTML = (setting.curimage + 1) + '/' + setting.imagearray.length
    },

    showhidenavpanel: function(state) {
        var setting = this.setting
        //var endpoint = (state == "show") ? setting.dimensions[1] - parseInt(simpleGallery_navpanel.panel.height) : this.setting.dimensions[1]
        //setting.$navpanel.stop().animate({ top: endpoint }, simpleGallery_navpanel.slideduration)
    }
}

simpleGallery.routines = {

    getSlideHTML: function(imgelement) {
        var layerHTML = (imgelement[1]) ? '<a href="' + imgelement[1] + '" target="' + imgelement[2] + '">\n' : '' //hyperlink slide?
        layerHTML += '<img src="' + imgelement[0] + '" style="border-width:0" />'
        layerHTML += (imgelement[1]) ? '</a>' : ''
        return layerHTML //return HTML for this layer
    },

    addnavpanel: function(setting) {
        var interfaceHTML = ''
        interfaceHTML += '<div style="background-image: url(Images/BannerAction_Bg.png);background-repeat: no-repeat;width:65px;height:27px;float:right;margin-right:8px;margin-top:12px;">'
        for (var i = 0; i < 3; i++) {
            var imgstyle = 'width:16px;height:16px;cursor:hand;cursor:pointer;margin-top:4px;'
            var title = (i == 0 ? 'Prev' : (i == 1) ? (setting.ispaused ? 'Play' : 'Pause') : 'Next')
            var imagesrc = (i == 1) ? simpleGallery_navpanel.images[(setting.ispaused) ? 1 : 3] : simpleGallery_navpanel.images[i]
            interfaceHTML += '<img class="navimages" title="' + title + '" src="' + imagesrc + '" style="' + imgstyle + '" height="19px" /> '
        }
        interfaceHTML += '</div>'
        /*interfaceHTML+='<div class="gallerystatus" style="margin-top:1px">' + (setting.curimage+1) + '/' + setting.imagearray.length + '</div>'*/
        setting.$navpanel = $('<div class="navpanellayer"></div>')
			.css({ position: 'absolute', width: '100%', height: '50%', left: 0, top: 0, font: simpleGallery_navpanel.panel.fontStyle, zIndex: '1001'})
			.appendTo(setting.$wrapperdiv)
        $('<div ></div><div class="navpanellayerfg"></div>')
			.css({ position: 'absolute', left: 0, top: 0, width: '100%', height: '100%' })
			.eq(0).css({ opacity: simpleGallery_navpanel.panel.opacity ,cursor: 'hand'}) //"navpanellayerbg" div
			.end().eq(1).css({ paddingTop: simpleGallery_navpanel.panel.paddingTop, textAlign: 'center', color: 'white' }).html(interfaceHTML) //"navpanellayerfg" div
			.end().appendTo(setting.$navpanel)
        return setting.$navpanel.find('img.navimages, div.gallerystatus').get() ////return 4 nav buttons DIVs as DOM objects
    },

    getCookie: function(Name) {
        var re = new RegExp(Name + "=[^;]+", "i"); //construct RE to search for target name/value pair
        if (document.cookie.match(re)) //if cookie found
            return document.cookie.match(re)[0].split("=")[1] //return its value
        return null
    },

    setCookie: function(name, value) {
        document.cookie = name + "=" + value + ";path=/"
    }
}