function CreateSlideshow(){
	IdPhotoAffiche = 0;
	IdPhotoMaxLoaded = 0;
	largeurPhoto = 623;
	loadJason("js/content_slide.json");
	$('fleche_gauche').setStyle('opacity','0.001');
	$('fleche_droite').setStyle('opacity','0.001');
	$('fleche_gauche').setStyle('background-image','url(images/slideshow/fleche_gauche.png)');
	$('fleche_droite').setStyle('background-image','url(images/slideshow/fleche_droite.png)');
}





function loadJason(urlJason){

	var request = new Request.JSON({
		url: urlJason,
		onComplete: function(jsonObj) {
			galerieJSON = jsonObj.previews;
			placeImage(IdPhotoAffiche);
		}
	}).send();
	
}
function placeImage(idPhoto){
	srcImage = '<img src="'+galerieJSON[idPhoto]['src']+'">';
	var bloc 	= new Element('div',{ 'class':'image_slide'});
	bloc.set('html', srcImage);
	bloc.inject($('container_images'));

	changeInfos(idPhoto);
	
	if(idPhoto > IdPhotoMaxLoaded){
		IdPhotoMaxLoaded = idPhoto;
	}

}
function changeInfos(idPhoto){
	if(idPhoto !=0) {	
		$('container_legende').tween('margin-top', '-50');
		$('titre_legende_show').set('text', galerieJSON[idPhoto]['title']);
		$('jour1').set('text', galerieJSON[idPhoto]['date1']);
		//$('jour2').set('html', "| "+galerieJSON[idPhoto]['date2']+"<br/><em><a href='"+galerieJSON[IdPhotoAffiche]['url']+"' class='georgia lien_legende'>En savoir plus</a></em>");
		$('jour2').set('html', "<br/><em><a href='"+galerieJSON[idPhoto]['url']+"' class='georgia lien_legende'>En savoir plus</a></em>");
		
		Cufon.replace('#titre_legende_show');
	}else{
		$('container_legende').tween('margin-top', '0');
	}
}

function slideOver(){
	if(IdPhotoAffiche != 0){
		$('container_legende').tween('margin-top', '-50'); 
	}	
}
function slideOut(){
	$('container_legende').tween('margin-top', '0'); 	
}
function moveLeft(){	
	idPhoto = IdPhotoAffiche-1;
	if(idPhoto<=0){
		$('fleche_gauche').tween('opacity',0);
	}
	if(idPhoto>=0){
		changeInfos(idPhoto);
		movePhotoTo(idPhoto);
	}
}
function moveRight(){
	idPhoto = IdPhotoAffiche+1;
	if(idPhoto > IdPhotoMaxLoaded){
		placeImage(idPhoto);
	}else{
		changeInfos(idPhoto);
	}
	movePhotoTo(idPhoto);
	if(idPhoto>=17){
		$('fleche_droite').tween('opacity',0);
	}
}
function movePhotoTo(idPhoto){
	if(idPhoto >= 0){
		position = -idPhoto*largeurPhoto;
		$('container_images').tween('margin-left', position); 
		IdPhotoAffiche = idPhoto;	
	}
}
function flecheOver(fleche){
	if(fleche.id =='container_fleche_gauche'){
		if(IdPhotoAffiche!=0){
			$(fleche.id).getFirst().tween('opacity', '0.7');
		}
	}else if(fleche.id =='container_fleche_droite'){
		if(IdPhotoAffiche!=17){
			$(fleche.id).getFirst().tween('opacity', '0.7');
		}
	}
}
function flecheOut(fleche){
	$(fleche.id).getFirst().tween('opacity', '0.001');
}