// POPUP
function popup(URL) {
	largeur=350;
	hauteur=380;
	positionx = (screen.width - largeur)/2;
	positiony = (screen.height - hauteur)/2;
	var w=window.open(URL,"ecouter","width="+largeur+",height="+hauteur+",screenX="+positionx+",screenY="+positiony+",left="+positionx+",top="+positiony+",menubar=0,toolbar=0,location=0,status=0,resizable=1,scrollbars=1");
	w.focus();
}