var ie = document.all

/* hides <select> and <applet> objects (for IE only) */
function hideElement( elmID, overDiv ) {
  if( ie ) {
	for( i = 0; i < document.all.tags( elmID ).length; i++ ) {
	  obj = document.all.tags( elmID )[i];
	  if( !obj || !obj.offsetParent ) {
		continue;
	  }

	  // Find the element's offsetTop and offsetLeft relative to the BODY tag.
	  objLeft	= obj.offsetLeft;
	  objTop	= obj.offsetTop;
	  objParent = obj.offsetParent;

	  while( objParent.tagName.toUpperCase() != "BODY" ) {
		objLeft  += objParent.offsetLeft;
		objTop   += objParent.offsetTop;
		objParent = objParent.offsetParent;
	  }

	  objHeight = obj.offsetHeight;
	  objWidth = obj.offsetWidth;

	  if(( overDiv.offsetLeft + overDiv.offsetWidth ) <= objLeft );
	  else if(( overDiv.offsetTop + overDiv.offsetHeight ) <= objTop );
	  else if( overDiv.offsetTop >= ( objTop + objHeight ));
	  else if( overDiv.offsetLeft >= ( objLeft + objWidth ));
	  else {
		obj.style.visibility = "hidden";
}}}}
/*
* unhides <select> and <applet> objects (for IE only)
*/
function showElement( elmID ) {
  if( ie ) {
	for( i = 0; i < document.all.tags( elmID ).length; i++ ) {
	  obj = document.all.tags( elmID )[i];

	  if( !obj || !obj.offsetParent ) {
		continue;
	  }

	  obj.style.visibility = "";
}}}

// -------------------------------------------------------------------
// Image Thumbnail Viewer Script- By Dynamic Drive, available at: http://www.dynamicdrive.com
// Last updated: Jan 22nd, 2007
// -------------------------------------------------------------------

var thumbnailviewer={
enableTitle: true, //Should "title" attribute of link be used as description?
enableAnimation: true, //Enable fading animation?
enableNavigation: false, //Enable Navigation prev-next
LANGUE: 'FR',
defineheader: '<div class="footerbar" onclick="thumbnailviewer.closeit()">Fermer X</div>', //Define HTML for footer interface
defineheader_EN: '<div class="footerbar" onclick="thumbnailviewer.closeit()">Quit X</div>', //Define HTML for footer interface
defineLoading: '<img src="../js/thumbnailviewer/loading.gif" /> Chargement de l\'image...', //Define HTML for "loading" div
defineLoading_EN: '<img src="../js/thumbnailviewer/loading.gif" /> Loading...', //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"

createthumbBox:function(){
if(LANGUE) { this.LANGUE = LANGUE; }

//write out HTML for Image Thumbnail Viewer plus loading div
document.write('<div id="thumbBox">'
			  +   ((this.LANGUE == 'EN')?this.defineheader_EN:this.defineheader)
			  + ((this.enableNavigation)?
			   '  <div id="hoverNav">'
			  +'	<a id="prevLink" href="#" onclick="thumbnailviewer.prevnext(\'prevLink\')"></a>'
			  +'	<a id="nextLink" href="#" onclick="thumbnailviewer.prevnext(\'nextLink\')"></a>'
			  +'  </div>':'')
			  +'  <div id="thumbImage"></div>'
			  +'</div>');

document.write('<div id="thumbLoading">'+((this.LANGUE == 'EN')?this.defineLoading_EN: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
},


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+10+"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()", 20)
}
},


loadimage:function(link){ //Load image function that gets attached to each link on the page with rel="thumbnail"

 //Création du fond
  var obj_body = document.getElementsByTagName('body').item(0);
  var obj_splash_screen = document.createElement('a');
  obj_splash_screen.setAttribute('id', 'splash_screen');
  var array_page_size = this.getPageSize();
  obj_splash_screen.style.width = '100%';
  obj_splash_screen.style.height = array_page_size[1]+'px';
  obj_splash_screen.onclick = function() { thumbnailviewer.closeit(); return false; }
  obj_body.appendChild(obj_splash_screen);

 // Suivant - précedent
  if(this.enableNavigation) {
	var image_id_current;
	for (var i=0; i<this.targetlinks.length; i++) {
	  if(this.targetlinks[i] == link) { image_id_current = i; }
	}
	var p = document.getElementById("prevLink"); p.setAttribute("image",link); p.style.display=(image_id_current > 0)?'block':'none';
	var p = document.getElementById("nextLink"); p.setAttribute("image",link); p.style.display=(image_id_current < (this.targetlinks.length-1))?'block':'none';
  }
 // Fin Suivant - précedent

  if (this.thumbBox.style.visibility=="visible") //if thumbox is visible on the page already
	this.closeit() //Hide it first (not doing so causes triggers some positioning bug in Firefox
  var imageHTML='<img id="thumbBoxImage" src="'+link.getAttribute("href")+'" style="'+this.opacitystring+';" />' //Construct HTML for shown image
  			   +'<p class="legend">'+((this.enableTitle && link.getAttribute("title"))?link.getAttribute("title"):'')+'</p>';
  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(this.enableNavigation) {
	  document.getElementById('prevLink').style.height = document.getElementById('thumbBoxImage').height+'px';
	  document.getElementById('prevLink').style.width  = document.getElementById('thumbBoxImage').width/2+'px';
	  document.getElementById('nextLink').style.height = document.getElementById('thumbBoxImage').height+'px';
	  document.getElementById('nextLink').style.width  = document.getElementById('thumbBoxImage').width/2+'px';
	}

	document.getElementById('thumbBox').style.width  = document.getElementById('thumbBoxImage').width+'px';
	thumbnailviewer.centerDiv(thumbnailviewer.thumbBox);

	hideElement( 'SELECT', 'thumbBox' );
  }
  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=link.getAttribute("href")
  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)
},


closeit:function(){ //Close "thumbbox" div function
this.stopanimation()
this.thumbBox.style.visibility="hidden"
this.thumbImage.innerHTML=""
this.thumbBox.style.left="-2000px"
this.thumbBox.style.top="-2000px"
showElement( 'SELECT' );
var obj_body = document.getElementsByTagName('body').item(0);
obj_body.removeChild(document.getElementById('splash_screen'));
},

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(){
		thumbnailviewer.stopanimation() //Stop any currently running fade animation on "thumbbox" div before proceeding
		thumbnailviewer.loadimage(this) //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

prevnext:function(link){
  var p = document.getElementById(link);
  var image_current = p.getAttribute("image");

  var image_suivante = '';
  for (var i=0; i<this.targetlinks.length; i++) {
	if((link == 'prevLink') && (this.targetlinks[i] == image_current)) { image_suivante = this.targetlinks[i-1]; }
	if((link == 'nextLink') && (this.targetlinks[i] == image_current)) { image_suivante = this.targetlinks[i+1]; }
  }
  this.stopanimation() //Stop any currently running fade animation on "thumbbox" div before proceeding
  this.loadimage(image_suivante) //Load image
  return false
},

getPageSize:function(){
  var xScroll, yScroll;
  if (window.innerHeight && window.scrollMaxY) {
	xScroll = document.body.scrollWidth;
	yScroll = window.innerHeight + window.scrollMaxY;
  } else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
	xScroll = document.body.scrollWidth;
	yScroll = document.body.scrollHeight;
  } else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
	xScroll = document.body.offsetWidth;
	yScroll = document.body.offsetHeight;
  }
  var windowWidth, windowHeight;
  if (self.innerHeight) {	// all except Explorer
	windowWidth = self.innerWidth;
	windowHeight = self.innerHeight;
  } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
	windowWidth = document.documentElement.clientWidth;
	windowHeight = document.documentElement.clientHeight;
  } else if (document.body) { // other Explorers
	windowWidth = document.body.clientWidth;
	windowHeight = document.body.clientHeight;
  }
  // for small pages with total height less then height of the viewport
  var pageHeight, pageWidth;
  if(yScroll < windowHeight){
	pageHeight = windowHeight;
  } else {
	pageHeight = yScroll;
  }
  // for small pages with total width less then width of the viewport
  if(xScroll < windowWidth){
	pageWidth = windowWidth;
  } else {
	pageWidth = xScroll;
  }
  var arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight)
  return arrayPageSize;
}
}

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")