taille = getElementsByClassName("div","afficher_div")*720;
document.getElementById('afficher_bis').style.width = taille.toString()+"px";
speed = 10;
speed2 = speed;
posX=document.getElementById('afficher').scrollLeft;
y="150";
ok = 1;
var object;
function afficher()
{
	if (posX+725>taille && ok==1)
	{
		ok=0;
		speed=-10;
		speed2=speed;
	}
	else if (posX<5 && ok==0)
	{
		ok=1;
		speed=10;
		speed2=speed;
	}
	posX = posX+speed;
	document.getElementById('afficher').scrollLeft=posX;
	if(posX%720==0)
		object = setTimeout("afficher()",5000);	
	else
		object = setTimeout("afficher()",30);
}
object = setTimeout("afficher()",5000);

function goTo (valeur)
{
	clearTimeout(object);
	posX= valeur*720;
	document.getElementById('afficher').scrollLeft=posX;
	object =setTimeout("afficher()",5000);
}
function getElementsByClassName( tag_, class_)
{
	var i, k,j=0;
	var O_Tab = document.getElementsByTagName( tag_);
	for( i=0, k=0; i < O_Tab.length; i++)
	{
		if( O_Tab[i].className == class_)j=j+1;
	}
	return j; 
}