if($('previous_photo')){
	$('previous_photo').addEvent('click', function(e){
	 e.stop();
	 
		val_cur = $('cadre_photo').get('val');
		directory = $('cadre_photo').get('directory');
		
		if(parseInt(val_cur) == 0){
		
			val_previous = (nbImages - 1);
		
		}
		else {
		
			val_previous = parseInt(val_cur) - 1;
			//alert(val_next);
		}
		
		$('cadre_photo').set('val', val_previous);
		$('cadre_photo').set('src', directory + "/" + tabImages[val_previous]);
		 
	});
}
if($('next_photo')){
	$('next_photo').addEvent('click', function(e){
	 e.stop();
	 
		val_cur = $('cadre_photo').get('val');
		directory = $('cadre_photo').get('directory');
		
		if(parseInt(val_cur) == (nbImages - 1)){
		
			val_next = 0;
		
		}
		else {
		
			val_next = parseInt(val_cur) + 1;
			//alert(val_next);
		}
		
		$('cadre_photo').set('val', val_next);
		$('cadre_photo').set('src', directory + "/" + tabImages[val_next]);
	
	 
	 
	});
}