var dBannierePics;
var dBanniereSens;
var dBanniereDivEnCours;
var dBannierePicsLength;

function banniereAnimationLaunch(){

	dBannierePics = YAHOO.util.Dom.getElementsByClassName("dBanniereDynamique", "div");

	dBanniereSens = 0;
	dBanniereDivEnCours = dBannierePics.length - 1;
	dBannierePicsLength = dBannierePics.length;

	banniereAnimation();

}

var resumeBanniereAnimation = function () {
	banniereAnimation();
}

function banniereAnimation(){

	if(dBanniereDivEnCours == 0){
		dBanniereDivEnCours = dBanniereDivEnCours + 1;
		dBanniereSens = 1;
	}
	if(dBanniereDivEnCours == dBannierePicsLength){
		dBanniereDivEnCours = dBanniereDivEnCours - 1;
		dBanniereSens = 0;
	}

	var anim = new YAHOO.util.Anim(dBannierePics[dBanniereDivEnCours]);
	if(dBanniereSens == 0)
		anim.attributes.opacity = { from : 1, to : 0 };
	else
		anim.attributes.opacity = { from : 0, to : 1 };
	anim.duration = 16;
	anim.method = YAHOO.util.Easing.backIn;

	anim.onComplete.subscribe(resumeBanniereAnimation);

	if(dBanniereSens == 0) dBanniereDivEnCours = dBanniereDivEnCours - 1;
	if(dBanniereSens == 1) dBanniereDivEnCours = dBanniereDivEnCours + 1;

	anim.animate();

}