var Defil = function (offre_promo){
	var timerstart;
	var defil = $(offre_promo);
	var texte = defil.getElement("div.texte");
	var effet = new Fx.Styles(texte, {duration:25000, wait:false});
	var defiler = function(){
		effet.set({
			'margin-left' : [750]
		});
		effet.start({
			'margin-left' : [-750]
		});
	};
	defiler();
	defiler.periodical(25000);
}