var longueurDeplacement = 3;
var vitesseDeplacement = 100;

function defileBanniere(ban) 
{
	b = document.getElementById(ban);
	bn = b.childNodes; 
	for (var n=1;n>-1;n--) 
	{
		if (bn[n].offsetLeft+bn[n].offsetWidth <0)
			bn[n].style.left = bn[(n == 0?1:0)].offsetLeft + bn[n].offsetWidth+"px";
		bn[n].style.left = bn[n].offsetLeft - longueurDeplacement+"px"; 
	}
setTimeout("defileBanniere('"+ban+"')",vitesseDeplacement);
}