function playSound ()
{
/*	snd_el = document.getElementById ('sound_el');
	if (!snd_el)	return;

	snd_el.innerHTML = '';

	if (navigator.userAgent.indexOf('MSIE') !=-1)
	{
		snd_el.innerHTML = '<embed type="application/x-mplayer2" pluginspage="http://www.microsoft.com/Windows/MediaPlayer/" Name="MediaPlayer" src="bell.wav" AutoStart="true" ShowStatusBar="0" ShowControls="0" ShowDisplay="0" HEIGHT="1" WIDTH="1" loop="false">';
	}
	else
	{
		snd_el.innerHTML = '<embed type="application/x-mplayer2" pluginspage="http://www.microsoft.com/Windows/MediaPlayer/" Name="MediaPlayer" src="bell.wav" AutoStart="true" ShowStatusBar="0" ShowControls="0" ShowDisplay="0" volume="1" HEIGHT="1" WIDTH="1" loop="false">';
	}*/
}