/* 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 fadeSlideShow_descpanel = {
	controls: [['x.png',7,7], ['restore.png',10,11], ['loading.gif',54,55]], //full URL and dimensions of close, restore, and loading images
	fontStyle: 'normal 11px Verdana', //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 = $('#' + setting.wrapperid).css({
			position: 'relative',
			visibility: 'visible',
			background: 'black',
			overflow: 'hidden',
			width: setting.dimensions[0],
			height: setting.dimensions[1]
		}).empty() //main slideshow DIV
		if (setting.$wrapperdiv.length == 0) //if no wrapper DIV found
		{
			alert("Error: DIV with ID \"" + setting.wrapperid + "\" not found on page.")
			return
		}
		setting.$gallerylayers = $('<div class="gallerylayer"></div><div class="gallerylayer"></div>') //two stacked DIVs to display the actual slide 
		.css({
			position: 'absolute',
			left: 0,
			top: 0,
			width: '100%',
			height: '100%',
			background: 'black'
		}).appendTo(setting.$wrapperdiv)
		var $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) //account 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
			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())
			}
		
		// KP - part of the 'next' link modification so that the images continue to loop after being clicked
		if (setting.displaymode.type == "manual") //in manual mode
		{
			setting.displaymode.type = "auto" //switch back to "auto" mode after nav buttons are clicked to continue loop
		}
	},
	
	showslide: function(keyword)
	{
		var slideshow = this
		var setting = slideshow.setting
		// KP - removed mouseover pause so that the images continue to rotate
		/*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: 1000,
			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: 999
		}) //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)
	{
		// KP - Modified this so that the images themselves become the 'next' button
		//var layerHTML=(imgelement[1])? '<a href="'+imgelement[1]+'" target="'+imgelement[2]+'">\n' : '' //hyperlink slide?
		var layerHTML = (imgelement[1]) ? '<a href="#" class="' + imgelement[1] + '">\n' : ''
		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 = $('<div class="fadeslidedescdiv"></div>').css({
			position: 'absolute',
			visibility: 'hidden',
			width: '100%',
			left: 0,
			top: setting.dimensions[1],
			font: fadeSlideShow_descpanel.fontStyle,
			zIndex: '1001'
		}).appendTo(setting.$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=/"
	}
}