function play() 
{ 
  document.getElementById("playAudio").innerHTML = '';
  document.getElementById("playAudio").innerHTML='<embed src=captchaSonoro.mp3?'+new Date().getTime()+' hidden="true" autostart="true" mastersound/>';

  document.getElementById("__ac_captcha").value="";
  document.getElementById("__ac_captcha").focus();

}