var _photoId = 1;
var _maxPhotoId = 11;
var _carrousselTimeout = null;

function setMaxPhotoId(maxPhotoId) {
	_maxPhotoId = maxPhotoId;	
}

function changerPhotoCadre(photoId) {
	// Effectuer une rotation si necessaire
	if (photoId > _maxPhotoId)
		photoId = 1;
	else if (photoId < 1)
		photoId = _maxPhotoId;
	
	// enlever le style de l'ancien bouton actif
	$('#linkPhotoCadre' + _photoId).removeClass('selected');
	
	// changer le photo id
	_photoId = photoId;
	
	// Changer le style du nouveau bouton actif
	$('#linkPhotoCadre' + _photoId).addClass('selected');
	
	// changer les photos
	var photo1 = $('#imgCentre');
	var photo2 = $('#imgCentre2');
	photo1.show();
	photo2.attr('src', 'images/entete' + _photoId + '.jpg');
	photo1.fadeOut(1500, function() { photo1.attr('src', photo2.attr('src')); });
	
	if (_carrousselTimeout) clearTimeout(_carrousselTimeout);
	_carrousselTimeout = setTimeout('doStartCarroussel()', 4000);
}


  // Arguments are image paths relative to the current page.
function preLoadImage() {
	var args_len = arguments.length;
	for (var i = args_len; i--;) {
		var cacheImage = document.createElement('img');
		cacheImage.src = arguments[i];
	}
}

// Start the carroussel
function doStartCarroussel(initPhotoId) {
	if (initPhotoId) _photoId = initPhotoId;
	if (_carrousselTimeout)
		changerPhotoCadre(_photoId + 1);
	else
		_carrousselTimeout = setTimeout('doStartCarroussel()', 4000);
}