function play() 
{ 
  document.getElementById("playAudio").innerHTML = '';
  document.getElementById("playAudio").innerHTML='<embed src=captchaSonoro.swf?'+new Date().getTime()+' hidden="true" loop=0 playcount=1 autostart="false" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer"/>';

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

}