// -------------------------------------------------------------------
// Image Thumbnail Viewer Script- By Dynamic Drive, available at: http://www.dynamicdrive.com
// Last updated: Jan 22nd, 2007
// -------------------------------------------------------------------
// English version
// This script have been modified by Francis Paquin-Brien.
// It have been adapted to Forafoto's website.
// If you want to use it, please, write us before plz. Thank you.
// -------------------------------------------------------------------
// French version
// Ce script a été modifié par Francis Paquin-Brien.
// Il a été adapté au site Web Forafoto.
// Si vous voulez l'utiliser, écrivez-nous d'abord svp. Merci.
// -------------------------------------------------------------------
var thumbnailviewer={
enableTitle: true, //Should "title" attribute of link be used as description?
enableAnimation: true, //Enable fading animation?
defineStartFooter: '<div class="footerbar" align="right">', //Define HTML for starting footer interface
defineRollover: '<div style="cursor: pointer;" id="rolloverDesc" onMouseOver="document.getElementById(\'desc\').style.filter=\'progid:DXImageTransform.Microsoft.alpha(opacity=60)\'; document.getElementById(\'desc\').style.mozopacity=\'0.6\'; document.getElementById(\'desc\').style.opacity=\'0.6\'; document.getElementById(\'descCont\').style.filter=\'progid:DXImageTransform.Microsoft.alpha(opacity=100)\'; document.getElementById(\'descCont\').style.mozopacity=\'1\'; document.getElementById(\'descCont\').style.opacity=\'1\'; this.style.background=\'url(images/desclabel_over.gif)\';" onMouseOut="document.getElementById(\'desc\').style.filter=\'progid:DXImageTransform.Microsoft.alpha(opacity=0)\'; document.getElementById(\'desc\').style.mozopacity=\'0\'; document.getElementById(\'desc\').style.opacity=\'0\'; document.getElementById(\'descCont\').style.filter=\'progid:DXImageTransform.Microsoft.alpha(opacity=0)\'; document.getElementById(\'descCont\').style.mozopacity=\'0\'; document.getElementById(\'descCont\').style.opacity=\'0\'; this.style.background=\'url(images/desclabel.gif)\';"></div>', //Define HTML for description interface
defineEndFooter: '<div id="footer"><img style="cursor: pointer;" onClick="thumbnailviewer.closeit(); clearInterval(this.changePhoto);" onMouseDown="this.src = \'images/closelabel_down.gif\'" onMouseOut="this.src = \'images/closelabel.gif\'" onMouseOver="this.src = \'images/closelabel_over.gif\'" src="images/closelabel.gif" width="80" height="22"></div></div>', //Define HTMl for closing button
defineLoading: '<img src="loading.gif">Chargement de l\'image...', //Define HTML for "loading" div

/////////////No need to edit beyond here/////////////////////////

scrollbarwidth: 16,
opacitystring: 'filter:progid:DXImageTransform.Microsoft.alpha(opacity=10); -moz-opacity: 0.1; opacity: 0.1',
targetlinks:[], //Array to hold links with rel="thumbnail"
changePhoto:"undefined",

/***********************
Création de la boite d'affichage
***********************/
createthumbBox:function(){
//Variable contenant les attributs de l'image
//write out HTML for Image Thumbnail Viewer plus loading div
document.write('<div id="thumbBox"><div id="thumbImage"></div>'+this.defineStartFooter)
document.write(this.defineRollover+this.defineEndFooter+'</div>')
document.write('<div id="thumbLoading">'+this.defineLoading+'</div>')
this.thumbBox=document.getElementById("thumbBox")
this.thumbImage=document.getElementById("thumbImage") //Reference div that holds the shown image
this.thumbLoading=document.getElementById("thumbLoading") //Reference "loading" div that will be shown while image is fetched
this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body //create reference to common "body" across doctypes
},

/***********************
Voir la photo suivante
***********************/
nextImage:function(){
if(numPhoto < tabPhotos.length-1)
numPhoto++
else
numPhoto = 0

if(this.changePhoto != "undefined"){
	clearInterval(this.changePhoto)
	this.changePhoto=setInterval("thumbnailviewer.nextImage()", 5000)
}

limage = new Image
limage.src = tabPhotos[numPhoto]
var largeur = limage.width
var hauteur = limage.height
thumbnailviewer.stopanimation() //Stop any currently running fade animation on "thumbbox" div before proceeding
thumbnailviewer.loadimage(tabPhotos[numPhoto], largeur, hauteur, "oui") //Load image
//return false
},

/***********************
Voir la photo précédente
***********************/
prevImage:function(){
if(numPhoto == 0)
numPhoto = tabPhotos.length - 1
else
numPhoto--;

if(this.changePhoto != "undefined"){
	clearInterval(this.changePhoto)
	this.changePhoto=setInterval("thumbnailviewer.nextImage()", 5000)
}

limage = new Image
limage.src = tabPhotos[numPhoto]
var largeur = limage.width
var hauteur = limage.height
thumbnailviewer.stopanimation() //Stop any currently running fade animation on "thumbbox" div before proceeding
thumbnailviewer.loadimage(tabPhotos[numPhoto], largeur, hauteur, "oui") //Load image
//return false
},

/***********************
Démarre/arrête le diaporama
***********************/
diaporama:function(){
if(this.changePhoto=="undefined"){
thumbnailviewer.nextImage()
this.changePhoto=setInterval("thumbnailviewer.nextImage()", 5000)
document.getElementById("btDiapo").style.background = "url(images/diapo_off.gif) no-repeat center top"
}else{
clearInterval(this.changePhoto)
this.changePhoto = "undefined"
document.getElementById("btDiapo").style.background = "url(images/diapo_on.gif) no-repeat center top"
}
},

centerDiv:function(divobj){ //Centers a div element on the page
var ie=document.all && !window.opera
var dom=document.getElementById
var scroll_top=(ie)? this.standardbody.scrollTop : window.pageYOffset
var scroll_left=(ie)? this.standardbody.scrollLeft : window.pageXOffset
var docwidth=(ie)? this.standardbody.clientWidth : window.innerWidth-this.scrollbarwidth
var docheight=(ie)? this.standardbody.clientHeight: window.innerHeight
var docheightcomplete=(this.standardbody.offsetHeight>this.standardbody.scrollHeight)? this.standardbody.offsetHeight : this.standardbody.scrollHeight //Full scroll height of document
var objwidth=divobj.offsetWidth //width of div element
var objheight=divobj.offsetHeight //height of div element
var topposition=(docheight>objheight)? scroll_top+docheight/2-objheight/2+"px" : scroll_top+"px" //Vertical position of div element: Either centered, or if element height larger than viewpoint height, 10px from top of viewpoint
divobj.style.left=docwidth/2-objwidth/2+"px" //Center div element horizontally
divobj.style.top=Math.floor(parseInt(topposition))+"px"
divobj.style.visibility="visible"
},

showthumbBox:function(){ //Show ThumbBox div
this.centerDiv(this.thumbBox)
if (this.enableAnimation){ //If fading animation enabled
this.currentopacity=0.1 //Starting opacity value
this.opacitytimer=setInterval("thumbnailviewer.opacityanimation()", 5)
}
},

loadimage:function(link, largeur, hauteur, changer){ //Load image function that gets attached to each link on the page with rel="thumbnail"
//Utilise les infos des tableaux
if(changer == "oui"){
var lien=link
var titre=tabTitre[numPhoto]
//Utilise les infos des liens
}else{
var lien=link.getAttribute("href")
var titre=link.getAttribute("title")
}

if (this.thumbBox.style.visibility=="visible"){ //if thumbox is visible on the page already, hide it first (not doing so causes triggers some positioning bug in Firefox)
this.stopanimation()
this.thumbBox.style.visibility="hidden"
this.thumbImage.innerHTML=""
this.thumbBox.style.left="-2000px"
this.thumbBox.style.top="-2000px"
}

var description = tabDescription[numPhoto] //Variable de la description à afficher
var imageHTML='<div id="masterPhoto" />'

//Vérifie si un titre est présent
if(titre != "")
imageHTML+='<div id="titrePhoto" /><p style="background:white;color:black" /><strong />'+titre+'</strong /></p /></div />'

imageHTML+='<div id="laPhoto"><img src="'+lien+'" style="'+this.opacitystring+'" />'

//Vérifie si une description est présente
if(description != ""){
document.getElementById('rolloverDesc').style.background = "url(images/desclabel.gif)"
document.getElementById('rolloverDesc').style.width = "160px"
document.getElementById('rolloverDesc').style.height = "22px"
document.getElementById('rolloverDesc').style.cursor = "pointer"

//Change la boite d'affichage en fonction du titre visible ou pas
if(titre != "")
imageHTML+='<div id="desc" style="position:absolute; left:0px; top:13px; background-color:#000000; width:200px; height:'+hauteur+'px; border-right:1px solid white; filter:progid:DXImageTransform.Microsoft.alpha(opacity=0); -moz-opacity: 0; opacity: 0;" /></div /><div id="descCont" style="filter:progid:DXImageTransform.Microsoft.alpha(opacity=0); -moz-opacity: 0; opacity: 0; position:absolute; left:2px; top:15px; width:200px; height:'+hauteur+'px;" /><p style="padding:2px"><strong />Description:</strong /><br />'+description+'</p /></div />'
else if(titre == "")
imageHTML+='<div id="desc" style="position:absolute; left:0px; top:0px; background-color:#000000; width:200px; height:'+hauteur+'px; border-right:1px solid white; filter:progid:DXImageTransform.Microsoft.alpha(opacity=0); -moz-opacity: 0; opacity: 0;" /></div /><div id="descCont" style="filter:progid:DXImageTransform.Microsoft.alpha(opacity=0); -moz-opacity: 0; opacity: 0; position:absolute; left:2px; top:2px; width:200px; height:'+hauteur+'px;"/><p style="padding:2px"><strong />Description:</strong /><br />'+description+'</p /></div />'

}else{
document.getElementById('rolloverDesc').style.background = ""
document.getElementById('rolloverDesc').style.cursor = "default"
}

//Vérifie le nombre image dans la catégorie avec la variable mono
if(mono == "0"){
//calcul des grandeurs des zones cliquables
if((largeur/3) < 80)
var zonelarge = 80
else
var zonelarge = largeur/3
var lereste = largeur-(zonelarge*2)
if(titre != "")
var changeTop = "13px"
else
var changeTop = "0px"
//Traitement des zones
imageHTML+='<div id="activePrev" onClick="thumbnailviewer.prevImage()" style="cursor: pointer; position:absolute; z-index:20; width:'+zonelarge+'px; height:'+hauteur+'px; top:'+changeTop+'px; left:0px;" onMouseDown="document.getElementById(\'btPrev\').style.background=\'url(images/prevlabel_over.gif)\'" onMouseOver="document.getElementById(\'btPrev\').style.visibility=\'visible\'" onMouseOut="document.getElementById(\'btPrev\').style.background=\'url(images/prevlabel.gif)\'; document.getElementById(\'btPrev\').style.visibility=\'hidden\'"><img src="images/spacer.gif" width="'+zonelarge+'px" height="'+hauteur+'"></div>'
imageHTML+='<div id="diapo" onClick="thumbnailviewer.diaporama()" style="cursor: pointer; position:absolute; z-index:20 width:'+lereste+'px; height:'+hauteur+'px; top:'+changeTop+'px; left:'+zonelarge+'px;" onMouseOver="document.getElementById(\'btDiapo\').style.visibility=\'visible\'" onMouseOut="document.getElementById(\'btDiapo\').style.visibility=\'hidden\'"><img src="images/spacer.gif" width="'+lereste+'" height="'+hauteur+'"></div>'
imageHTML+='<div id="activeNext" onClick="thumbnailviewer.nextImage()" style="cursor: pointer; position:absolute; z-index:20; width:'+zonelarge+'px; height:'+hauteur+'px; top:'+changeTop+'px; right:0px;" onMouseDown="document.getElementById(\'btNext\').style.background=\'url(images/nextlabel_over.gif)\'" onMouseOver="document.getElementById(\'btNext\').style.visibility=\'visible\'" onMouseOut="document.getElementById(\'btNext\').style.background=\'url(images/nextlabel.gif)\'; document.getElementById(\'btNext\').style.visibility=\'hidden\'"><img src="images/spacer.gif" width="'+zonelarge+'px" height="'+hauteur+'"></div>'
//Changement du bouton diaporama après clique
if(this.changePhoto=="undefined")
imageHTML+='<div id="btDiapo" style="visibility:hidden; position:absolute; z-index:19; width:166px; height:32px; top:50%; left:'+((largeur/2)-83)+'px; background:url(images/diapo_on.gif) no-repeat center top;"></div>'
else
imageHTML+='<div id="btDiapo" style="visibility:hidden; position:absolute; z-index:19; width:166px; height:32px; top:50%; left:'+((largeur/2)-83)+'px; background:url(images/diapo_off.gif) no-repeat center top;"></div>'
imageHTML+='<div id="btPrev" style="visibility:hidden; position:absolute; z-index:19; width:80px; height:32px; top:50%; left:0px; background:url(images/prevlabel.gif) no-repeat left top;"></div>'
imageHTML+='<div id="btNext" style="visibility:hidden; position:absolute; z-index:19; width:80px; height:32px; top:50%; right:0px; background:url(images/nextlabel.gif) no-repeat left top;"></div>'
}

imageHTML+='</div />'
imageHTML+='</div />'
this.centerDiv(this.thumbLoading) //Center and display "loading" div while we set up the image to be shown
this.thumbImage.innerHTML=imageHTML //Populate thumbImage div with shown image's HTML (while still hidden)
this.featureImage=this.thumbImage.getElementsByTagName("img")[0] //Reference shown image itself

this.featureImage.onload=function(){ //When target image has completely loaded
thumbnailviewer.thumbLoading.style.visibility="hidden" //Hide "loading" div
thumbnailviewer.showthumbBox() //Display "thumbbox" div to the world!
}

if (document.all && !window.createPopup) //Target IE5.0 browsers only. Address IE image cache not firing onload bug: panoramio.com/blog/onload-event/
this.featureImage.src=lien

this.featureImage.onerror=function(){ //If an error has occurred while loading the image to show
thumbnailviewer.thumbLoading.style.visibility="hidden" //Hide "loading" div, game over
}
},

setimgopacity:function(value){ //Sets the opacity of "thumbimage" div per the passed in value setting (0 to 1 and in between)
var targetobject=this.featureImage
if (targetobject.filters && targetobject.filters[0]){ //IE syntax
if (typeof targetobject.filters[0].opacity=="number") //IE6
targetobject.filters[0].opacity=value*100
else //IE 5.5
targetobject.style.filter="alpha(opacity="+value*100+")"
}
else if (typeof targetobject.style.MozOpacity!="undefined") //Old Mozilla syntax
targetobject.style.MozOpacity=value
else if (typeof targetobject.style.opacity!="undefined") //Standard opacity syntax
targetobject.style.opacity=value
else //Non of the above, stop opacity animation
this.stopanimation()
},

opacityanimation:function(){ //Gradually increase opacity function
this.setimgopacity(this.currentopacity)
this.currentopacity+=0.1
if (this.currentopacity>1)
this.stopanimation()
},

stopanimation:function(){
if (typeof this.opacitytimer!="undefined")
clearInterval(this.opacitytimer)
},

/***********************
Ferme la boite d'affichage
***********************/
closeit:function(){ //Close "thumbbox" div function
clearInterval(this.changePhoto)
this.changePhoto="undefined"
this.stopanimation()
this.thumbBox.style.visibility="hidden"
this.thumbImage.innerHTML=""
this.thumbBox.style.left="-2000px"
this.thumbBox.style.top="-2000px"
},

cleanup:function(){ //Clean up routine on page unload
this.thumbLoading=null
if (this.featureImage) this.featureImage.onload=null
this.featureImage=null
this.thumbImage=null
for (var i=0; i<this.targetlinks.length; i++)
this.targetlinks[i].onclick=null
this.thumbBox=null
},

dotask:function(target, functionref, tasktype){ //assign a function to execute to an event handler (ie: onunload)
var tasktype=(window.addEventListener)? tasktype : "on"+tasktype
if (target.addEventListener)
target.addEventListener(tasktype, functionref, false)
else if (target.attachEvent)
target.attachEvent(tasktype, functionref)
},

init:function(){ //Initialize thumbnail viewer script by scanning page and attaching appropriate function to links with rel="thumbnail"
if (!this.enableAnimation)
this.opacitystring=""
var pagelinks=document.getElementsByTagName("a")
for (var i=0; i<pagelinks.length; i++){ //BEGIN FOR LOOP
if (pagelinks[i].getAttribute("rel") && pagelinks[i].getAttribute("rel")=="thumbnail"){ //Begin if statement
pagelinks[i].onclick=function(){
limage = new Image;
limage.src = this.getAttribute("href");
var largeur = limage.width;
var hauteur = limage.height;
thumbnailviewer.stopanimation() //Stop any currently running fade animation on "thumbbox" div before proceeding
thumbnailviewer.loadimage(this, largeur, hauteur) //Load image
return false
}
this.targetlinks[this.targetlinks.length]=pagelinks[i] //store reference to target link
} //end if statement
} //END FOR LOOP
//Reposition "thumbbox" div when page is resized
this.dotask(window, function(){if (thumbnailviewer.thumbBox.style.visibility=="visible") thumbnailviewer.centerDiv(thumbnailviewer.thumbBox)}, "resize")


} //END init() function

}

thumbnailviewer.createthumbBox() //Output HTML for the image thumbnail viewer
thumbnailviewer.dotask(window, function(){thumbnailviewer.init()}, "load") //Initialize script on page load
thumbnailviewer.dotask(window, function(){thumbnailviewer.cleanup()}, "unload")