var icon = document.getElementById('music_icon');
var audio = null;
var timestamp = 0;

function switchsound()
{
	if (audio == null)
	{
		audio = document.createElement('audio');
		audio.id = 'bgsound';
		audio.src = music_url;
		audio.loop = 'loop';
		document.body.appendChild(audio);
	}

	if (audio.paused)
	{
		audio.play();
		icon.setAttribute("play","stop");
	}
	else if (new Date().getTime() > timestamp + 1000)
	{
		audio.pause();
		icon.setAttribute("play","on");
	}
}

function stopsound()
{
	if (audio != null)
	{
		audio.pause();
	}
	icon.setAttribute("play","on");
}

function startsound(event)
{
    document.removeEventListener('touchstart', startsound);

    if (audio == null)
	{
		audio = document.createElement('audio');
		audio.id = 'bgsound';
		audio.src = music_url;
		audio.loop = 'loop';
		document.body.appendChild(audio);
	}

    audio.play();
    icon.setAttribute('play','stop');

    timestamp = new Date().getTime();
}

document.addEventListener('touchstart', startsound);