/*
 * Affichage d'un contenu suivant
 * 
 * @copyright	egzakt.com
 *
 * @version 	2007/06/05
 * @package		EDU-083
 * @author 		Emilie
 */
function bloc_deroulant(objet) {
	objet.next().slideToggle();
	objet.toggleClass("selected");
	objet.parent().toggleClass("bloc_deroulant_selected");
	return false;
}

/*
 * Limiter le nombre de caractères dans un textarea
 * 
 * @author		http://www.ajaxray.com/blog/2007/11/09/interactive-character-limit-for-textarea-using-jquery/
 */
function limitChars(textid, limit, infodiv) {
	var text = $("#"+textid).val(); 
	var textlength = text.length;
	
	if (textlength > limit) {
		$("#" + infodiv).html("Vous ne pouvez pas écrire plus de "+limit+" caractères.");
		$("#"+textid).val(text.substr(0,limit));
		return false;
	}
	else {
		$("#" + infodiv).html("Vous avez "+ (limit - textlength) +" caractères restants.");
		return true;
	}
}


/*
 * Banniere entete
 *
 */
var anim_interval = 5000;	// Duree entre chaque transition
var anim_fadeout = "slow";
var front_container = "#banniere .front";
var rear_container = "#banniere .rear";
var data_container = "#banniere .data";
var nav_container = "#banniere .nav";
var front_id = 0;	// A initialiser onload
var rear_id = 0;
var banniere_anim = null;
var banniere_anim_lock = false;


function anim_bannieres() {
	display_banniere(getNextBanniere(),true);
	banniere_anim_lock = true;
}

function preload_banniere(container,id) {
	if (!container || !id) return false;
	$(container).css("backgroundImage",$('#b'+id).css("backgroundImage")).html($('#b'+id).html());
	if ($.browser.msie) $('#banniere .media .fleche').addClass("fleche_msie");	// IE PNG
}

function display_banniere(new_id,restart_anim) {
	preload_banniere(rear_container,new_id);

	// Car IE6 ne nous permet pas d'additionner 2 classes (.class1.class2)
	$(nav_container+' a').removeClass("selected").removeClass("dernier_selected");
	
	if (new_id == getLastBanniere()) { $('#banniere_'+new_id).addClass("dernier_selected"); }
	else { $('#banniere_'+new_id).addClass("selected"); }

	$(front_container).fadeOut(anim_fadeout,function() {
		$(front_container).html($(rear_container).html()).css("backgroundImage",$('#b'+new_id).css("backgroundImage")).show();

		front_id = new_id;

		if (restart_anim)
			banniere_anim = window.setTimeout('anim_bannieres()',anim_interval);
		
		banniere_anim_lock = false;
	});
}

function stop_banniere() {
	clearTimeout(banniere_anim);
	banniere_anim = null;
}

// HELPERS
function getNextBanniere() {
	if (front_id == getLastBanniere())	// Loop
		return getFirstBanniere();
	return front_id+1;
}
function getPrevBanniere() {
	if (front_id == getFirstBanniere())	// Loop
		return getLastBanniere();
	return front_id-1;
}
function getFirstBanniere() {
	var id = $(data_container).children(':first').attr('id');
	return parseInt(id.replace("b",""));
}
function getLastBanniere() {
	var id = $(data_container).children(':last').attr('id');
	return parseInt(id.replace("b",""));
}