function moveMoreOrLess(pas)
	{
		conteneur = document.getElementById("deroulant");
		conteneur.scrollLeft = conteneur.scrollLeft + pas;	
	}
function recule()
	{
		for (i=0; i<=25; i++)
		{
		setTimeout("moveMoreOrLess(-15)",100);
		}
	}
	function avance()
	{
		for (i=0; i<=25; i++)
		{
		setTimeout("moveMoreOrLess(15)",100);
		}
	}