var ua=navigator.userAgent.toLowerCase();
var isIE  = (ua.indexOf("msie") != -1);
var id = "anim1" // id du div conteneur
var vitesse = 10; // en ms
var pas = 2; // en px
if (isIE)
	pas = 6;
var timeup;
var timedown;
  
var div, sp;
div = document.getElementById(id);
sp = div.getElementsByTagName("div")[0];
    
div.style.position = "relative";
div.style.overflow = "hidden";
div.style.whiteSpace = "nowrap";
sp.style.position = "absolute";
sp.style.top = "0px";

function defileup() {
	clearTimeout(timedown);
	sp.style.top = (parseInt(sp.style.top,10) - pas)+"px";
	if(parseInt(sp.style.top,10) > -160) {
		timeup = setTimeout(defileup,vitesse);
	}
}						  
function defiledown() {
	clearTimeout(timeup);
	sp.style.top = (parseInt(sp.style.top,10) + pas)+"px";
	if(parseInt(sp.style.top,10) < 0) {
		timedown = setTimeout(defiledown,vitesse);
	}
}

var id2 = "anim2" // id du div conteneur
var vitesse2 = 10; // en ms
var pas2 = 2; // en px
if (isIE)
	pas2 = 6;
var timeup2;
var timedown2;
  
var div2, sp2;
div2 = document.getElementById(id2);
sp2 = div2.getElementsByTagName("div")[0];
    
div2.style.position = "relative";
div2.style.overflow = "hidden";
div2.style.whiteSpace = "nowrap";
sp2.style.position = "absolute";
sp2.style.top = "0px";

function defileup2() {
	clearTimeout(timedown2);
	sp2.style.top = (parseInt(sp2.style.top,10) - pas2)+"px";
	if(parseInt(sp2.style.top,10) > -160) {
		timeup2 = setTimeout(defileup2,vitesse2);
	}
}						  
function defiledown2() {
	clearTimeout(timeup2);
	sp2.style.top = (parseInt(sp2.style.top,10) + pas2)+"px";
	if(parseInt(sp2.style.top,10) < 0) {
		timedown2 = setTimeout(defiledown2,vitesse2);
	}
}