/* Ultimate Fade-in slideshow (v2.4)
* Last updated: May 24th, 2010. This notice must stay intact for usage 
* Author: Dynamic Drive at http://www.dynamicdrive.com/
* Visit http://www.dynamicdrive.com/ for full source code
*/

//Oct 6th, 09' (v2.1): Adds option to randomize display order of images, via new option displaymode.randomize
//May 24th, 10' (v2.4): Adds new "peakaboo" option to "descreveal" setting. oninit and onslide event handlers added.
var wrapper = "";
var intMap = 1;
var fadeSlideShow_descpanel={
	controls: [['x.png',7,7], ['restore.png',10,11], ['/assets/images/loading.gif',54,55]], //full URL and dimensions of close, restore, and loading images
	fontStyle: 'normal 11px Arial', //font style for text descriptions
	slidespeed: 200 //speed of description panel animation (in millisec)
}

//No need to edit beyond here...

jQuery.noConflict()

function fadeSlideShow(settingarg) {
    
	this.setting=settingarg
	settingarg=null
	var setting = this.setting
	
	setting.fadeduration=setting.fadeduration? parseInt(setting.fadeduration) : 500
	setting.curimage=(setting.persist)? fadeSlideShow.routines.getCookie("gallery-"+setting.wrapperid) : 0
	setting.curimage=setting.curimage || 0 //account for curimage being null if cookie is empty
	setting.currentstep=0 //keep track of # of slides slideshow has gone through (applicable in displaymode='auto' only)
	setting.totalsteps=setting.imagearray.length*(setting.displaymode.cycles>0? setting.displaymode.cycles : Infinity) //Total steps limit (applicable in displaymode='auto' only w/ cycles>0)
	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 () { }

	if (setting.displaymode.randomize) //randomly shuffle order of images?
		setting.imagearray.sort(function() {return 0.5 - Math.random()})
	var preloadimages=[] //preload images
	setting.longestdesc="" //get longest description of all slides. If no desciptions defined, variable contains ""
	for (var i=0; i<setting.imagearray.length; i++){ //preload images
		preloadimages[i]=new Image()
		preloadimages[i].src=setting.imagearray[i][0]
		if (setting.imagearray[i][3] && setting.imagearray[i][3].length>setting.longestdesc.length)
			setting.longestdesc=setting.imagearray[i][3]
	}
	var closebutt=fadeSlideShow_descpanel.controls[0] //add close button to "desc" panel if descreveal="always"
	setting.closebutton=(setting.descreveal=="always")? '<img class="close" src="'+closebutt[0]+'" style="float:right;cursor:hand;cursor:pointer;width:'+closebutt[1]+'px;height:'+closebutt[2]+'px;margin-left:2px" title="Hide Description" />' : ''
	var slideshow=this
	jQuery(document).ready(function ($) { //fire on DOM ready
	    var setting = slideshow.setting
	    var fullhtml = fadeSlideShow.routines.getFullHTML(setting.imagearray) //get full HTML of entire slideshow
	    setting.$wrapperdiv = $('#' + setting.wrapperid).css({ position: 'relative', visibility: 'visible', background: '#e7e7e7', overflow: 'hidden', width: setting.dimensions[0], height: setting.dimensions[1] }).empty() //main slideshow DIV
	    if (setting.$wrapperdiv.length == 0) { //if no wrapper DIV found
	        alert("Error: DIV with ID \"" + setting.wrapperid + "\" not found on page.")
	        return
	    }
	    setting.$gallerylayers = $('<div class="gallerylayer"></div><div class="gallerylayer"></div>') //two stacked DIVs to display the actual slide
			.css({ position: 'absolute', left: 0, top: 0, width: '100%', height: '100%', background: '#e7e7e7' })
			.appendTo(setting.$wrapperdiv)
	    var $loadingimg1 = '';
	 
	        $loadingimg = $('<img src="' + fadeSlideShow_descpanel.controls[2][0] + '" style="position:absolute;width:' + fadeSlideShow_descpanel.controls[2][1] + ';height:' + fadeSlideShow_descpanel.controls[2][2] + '" />')
			.css({ left: setting.dimensions[0] / 2 - fadeSlideShow_descpanel.controls[2][1] / 2, top: setting.dimensions[1] / 2 - fadeSlideShow_descpanel.controls[2][2] }) //center loading gif
			.appendTo(setting.$wrapperdiv);
	 
	    var $curimage = setting.$gallerylayers.html(fullhtml).find('img').hide().eq(setting.curimage) //prefill both layers with entire slideshow content, hide all images, and return current image
	    if (setting.longestdesc != "" && setting.descreveal != "none") { //if at least one slide contains a description (versus feature is enabled but no descriptions defined) and descreveal not explicitly disabled
	        fadeSlideShow.routines.adddescpanel($, setting)
	        if (setting.descreveal == "always") { //position desc panel so it's visible to begin with
	            setting.$descpanel.css({ top: setting.dimensions[1] - setting.panelheight })
	            setting.$descinner.click(function (e) { //asign click behavior to "close" icon
	                if (e.target.className == "close") {
	                    slideshow.showhidedescpanel('hide')
	                }
	            })
	            setting.$restorebutton.click(function (e) { //asign click behavior to "restore" icon
	                slideshow.showhidedescpanel('show')
	                $(this).css({ visibility: 'hidden' })
	            })
	        }
	        else if (setting.descreveal == "ondemand") { //display desc panel on demand (mouseover)
	            setting.$wrapperdiv.bind('mouseenter', function () { slideshow.showhidedescpanel('show') })
	            setting.$wrapperdiv.bind('mouseleave', function () { slideshow.showhidedescpanel('hide') })
	        }
	    }
	    setting.$wrapperdiv.bind('mouseenter', function () { setting.ismouseover = true }) //pause slideshow mouseover
	    setting.$wrapperdiv.bind('mouseleave', function () { setting.ismouseover = false })
	    if ($curimage.get(0).complete) { //accounf for IE not firing image.onload
	        $loadingimg.hide()
	        slideshow.paginateinit($)
	        slideshow.showslide(setting.curimage)
	    }
	    else { //initialize slideshow when first image has fully loaded
	        $loadingimg.hide()
	        slideshow.paginateinit($)
	        $curimage.bind('load', function () { slideshow.showslide(setting.curimage) })
	    }
	    setting.oninit.call(slideshow) //trigger oninit() event
	    $(window).bind('unload', function () { //clean up and persist
	        if (slideshow.setting.persist) //remember last shown image's index
	            fadeSlideShow.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") //catches 2 gallerylayer divs, gallerystatus div
	                        slideshow.setting[k][i].innerHTML = null
	                    slideshow.setting[k][i] = null
	                }
	            }
	        })
	        slideshow = slideshow.setting = null
	    })
	})
}

fadeSlideShow.prototype={

	navigate:function(keyword){
		var setting=this.setting
		clearTimeout(setting.playtimer)
		if (setting.displaymode.type=="auto"){ //in auto mode
			setting.displaymode.type="manual" //switch to "manual" mode when nav buttons are clicked on
			setting.displaymode.wraparound=true //set wraparound option to true
		}
		if (!isNaN(parseInt(keyword))){ //go to specific slide?
			this.showslide(parseInt(keyword))
		}
		else if (/(prev)|(next)/i.test(keyword)){ //go back or forth inside slide?
			this.showslide(keyword.toLowerCase())
		}
	},

	showslide:function(keyword){
		var slideshow=this
		var setting=slideshow.setting
		if (setting.displaymode.type=="auto" && setting.ismouseover && setting.currentstep<=setting.totalsteps){ //if slideshow in autoplay mode and mouse is over it, pause it
			setting.playtimer=setTimeout(function(){slideshow.showslide('next')}, setting.displaymode.pause)
			return
		}
		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)
		var $slideimage=setting.$gallerylayers.eq(setting.bglayer).find('img').hide().eq(imgindex).show() //hide all images except current one
		var imgdimensions=[$slideimage.width(), $slideimage.height()] //center align image
		$slideimage.css({marginLeft: (imgdimensions[0]>0 && imgdimensions[0]<setting.dimensions[0])? setting.dimensions[0]/2-imgdimensions[0]/2 : 0})
		$slideimage.css({marginTop: (imgdimensions[1]>0 && imgdimensions[1]<setting.dimensions[1])? setting.dimensions[1]/2-imgdimensions[1]/2 : 0})
		if (setting.descreveal=="peekaboo" && setting.longestdesc!=""){ //if descreveal is set to "peekaboo", make sure description panel is hidden before next slide is shown
			clearTimeout(setting.hidedesctimer) //clear hide desc panel timer
			slideshow.showhidedescpanel('hide', 0) //and hide it immediately
		}
		setting.$gallerylayers.eq(setting.bglayer).css({zIndex:2, 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)
				try{
					setting.onslide.call(slideshow, setting.$gallerylayers.eq(setting.fglayer).get(0), setting.curimage)
				}catch(e){
					alert("Fade In Slideshow error: An error has occured somwhere in your code attached to the \"onslide\" event: "+e)
				}
				if (setting.descreveal=="peekaboo" && setting.longestdesc!=""){
					slideshow.showhidedescpanel('show')
					setting.hidedesctimer=setTimeout(function(){slideshow.showhidedescpanel('hide')}, setting.displaymode.pause-fadeSlideShow_descpanel.slidespeed)
				}	
				setting.currentstep+=1
				if (setting.displaymode.type=="auto"){
					if (setting.currentstep<=setting.totalsteps || setting.displaymode.cycles==0)
						setting.playtimer=setTimeout(function(){slideshow.showslide('next')}, setting.displaymode.pause)
				}
			}) //end callback function
		setting.$gallerylayers.eq(setting.fglayer).css({zIndex:1}) //foreground layer becomes background
		setting.fglayer=setting.bglayer
		setting.bglayer=(setting.bglayer==0)? 1 : 0
		setting.curimage=imgindex
		if (setting.$descpanel){
			setting.$descpanel.css({visibility:(setting.imagearray[imgindex][3])? 'visible' : 'hidden'})
			if (setting.imagearray[imgindex][3]) //if this slide contains a description
				setting.$descinner.empty().html(setting.closebutton + setting.imagearray[imgindex][3])
		}
		if (setting.displaymode.type=="manual" && !setting.displaymode.wraparound){
			this.paginatecontrol()
		}
		if (setting.$status) //if status container defined
			setting.$status.html(setting.curimage+1 + "/" + totalimages)
	},

	showhidedescpanel:function(state, animateduration){
		var setting=this.setting
		var endpoint=(state=="show")? setting.dimensions[1]-setting.panelheight : this.setting.dimensions[1]
		setting.$descpanel.stop().animate({top:endpoint}, (typeof animateduration!="undefined"? animateduration : fadeSlideShow_descpanel.slidespeed), function(){
			if (setting.descreveal=="always" && state=="hide")
				setting.$restorebutton.css({visibility:'visible'}) //show restore button
		})
	},

	paginateinit:function($){
		var slideshow=this
		var setting=this.setting
		if (setting.togglerid){ //if toggler div defined
			setting.$togglerdiv=$("#"+setting.togglerid)
			setting.$prev=setting.$togglerdiv.find('.prev').data('action', 'prev')
			setting.$next=setting.$togglerdiv.find('.next').data('action', 'next')
			setting.$prev.add(setting.$next).click(function(e){ //assign click behavior to prev and next controls
				var $target=$(this)
				slideshow.navigate($target.data('action'))
				e.preventDefault()
			})
			setting.$status=setting.$togglerdiv.find('.status')
		}
	},

	paginatecontrol:function(){
		var setting=this.setting
			setting.$prev.css({opacity:(setting.curimage==0)? 0.4 : 1}).data('action', (setting.curimage==0)? 'none' : 'prev')
			setting.$next.css({opacity:(setting.curimage==setting.imagearray.length-1)? 0.4 : 1}).data('action', (setting.curimage==setting.imagearray.length-1)? 'none' : 'next')
			if (document.documentMode==8){ //in IE8 standards mode, apply opacity to inner image of link
				setting.$prev.find('img:eq(0)').css({opacity:(setting.curimage==0)? 0.4 : 1})
				setting.$next.find('img:eq(0)').css({opacity:(setting.curimage==setting.imagearray.length-1)? 0.4 : 1})
			}
	}

	
}

fadeSlideShow.routines = {

    getSlideHTML: function (imgelement) {
        var layerHTML = "";
        var strRef = imgelement[1];

        if (strRef.indexOf('javascript') > -1) {
            //layerHTML = (imgelement[1]) ? '<a onclick="' + imgelement[1] + '">\n' : '' //hyperlink slide?
            layerHTML = '<img onclick="' + imgelement[1] + '" useMap="' + '#mapHomeRotation' + intMap + '" src="' + imgelement[0] + '" style="border-width:0;" />\n'
            intMap = parseInt(intMap) + 1;


        } else {
            layerHTML = (imgelement[1]) ? '<a href="' + imgelement[1] + '" target="' + imgelement[2] + '">\n' : '' //hyperlink slide?
            layerHTML += '<img src="' + imgelement[0] + '" style="border-width:0;" />\n'
            layerHTML += (imgelement[1]) ? '</a>\n' : ''
        }


        return layerHTML //return HTML for this layer
    },

    getFullHTML: function (imagearray) {
        var preloadhtml = ''
        for (var i = 0; i < imagearray.length; i++)
            preloadhtml += this.getSlideHTML(imagearray[i])
        return preloadhtml
    },

    adddescpanel: function ($, setting) {
        setting.$descpanel = $('<div class="fadeslidedescdiv"></div>')
			.css({ position: 'absolute', visibility: 'hidden', width: '100%', left: 0, top: setting.dimensions[1], font: fadeSlideShow_descpanel.fontStyle, zIndex: '3' })
			.appendTo(setting.$wrapperdiv)
        $('<div class="descpanelbg"></div><div class="descpanelfg"></div>') //create inner nav panel DIVs
			.css({ position: 'absolute', left: 0, top: 0, width: setting.$descpanel.width() - 8, padding: '4px' })
			.eq(0).css({ background: 'black', opacity: 0.7 }).end() //"descpanelbg" div
			.eq(1).css({ color: 'white' }).html(setting.closebutton + setting.longestdesc).end() //"descpanelfg" div
			.appendTo(setting.$descpanel)
        setting.$descinner = setting.$descpanel.find('div.descpanelfg')
        setting.panelheight = setting.$descinner.outerHeight()
        setting.$descpanel.css({ height: setting.panelheight }).find('div').css({ height: '100%' })
        if (setting.descreveal == "always") { //create restore button
            setting.$restorebutton = $('<img class="restore" title="Restore Description" src="' + fadeSlideShow_descpanel.controls[1][0] + '" style="position:absolute;visibility:hidden;right:0;bottom:0;z-index:1002;width:' + fadeSlideShow_descpanel.controls[1][1] + 'px;height:' + fadeSlideShow_descpanel.controls[1][2] + 'px;cursor:pointer;cursor:hand" />')
				.appendTo(setting.$wrapperdiv)


        }
    },


    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=/"
    }
}