var selected = null;

function play(mp3, obj) {
	var playlist = "";
	if (!mp3) {
		var n = 0;
		var idPiste = "mp3" + n;
		var piste;
		while(document.getElementById(idPiste)) {
			piste = document.getElementById(idPiste);
			if (playlist != "") playlist += "|" + piste.value;
			else playlist = piste.value;
			n++;
			idPiste = "mp3" + n;
		}
		document.getElementById("all").getElementsByTagName("a")[0].style.color = "yellow";
		if (selected != null) selected.getElementsByTagName("a")[0].style.color = "white";
		selected = null;
	} else {
		playlist = mp3;
		document.getElementById("all").getElementsByTagName("a")[0].style.color = "white";
		if (selected != null) selected.getElementsByTagName("a")[0].style.color = "white";
		selected = obj;
		selected.getElementsByTagName("a")[0].style.color = "yellow";
	}
	document.getElementById("lecteur").src = "lecteur.php?mp3=" + playlist + "&options=autoplay";
}