/* 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:'white', 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:'white'})


			.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){ //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: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){


		var layerHTML=(imgelement[1])? '<a href="'+imgelement[1]+'" title="'+imgelement[2]+'" target="_blank">\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:'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:'white', 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=/"


	}


}