var NSsound = navigator.plugins && navigator.plugins["LiveAudio"];
var IEsound = navigator.plugins && document.all;
var audioEnabled = NSsound || IEsound;

function playIt() {
  document.audiopanel.play()
  
}

function stopIt() {
  document.audiopanel.stop();
 }

if (audioEnabled)
  document.write("<EMBED NAME='audiopanel' SRC='ding.wav' MASTERSOUND HEIGHT='1' WIDTH='1' HIDDEN='true' AUTOSTART='false' >") //join with previous line
else
  document.write("Your browser cannot play sound files.");