function toggleAudio(target) {
	var audio_str = "audio"+target;
	var bul_str = "bul"+target;
	var theAudio = document.getElementById(audio_str);
	var iBullet = document.getElementById(bul_str);
	if(theAudio.style.display == "none") {
		revealEvent(theAudio,iBullet);
	} else if (theAudio.style.display == "block") {
		closeAudio(theAudio,iBullet);
	}
}
	

function revealAudio(theAudio,iBullet) {
	theAudio.style.display = "block";
	iBullet.src = "images/ns_bullet_down.png";
}

function closeAudio(theAudio,iBullet) {
	theAudio.style.display = "none";
	iBullet.src = "images/ns_bullet.png";
}