var PlayerWindow = '';

function PlayMP3(comboID)
{
   var combo = document.getElementById(comboID);
   if (!combo)
      return;

   var guid = combo.options[combo.selectedIndex].value;
   var url = 'rss/MP3Player.php?guid=' + guid;

   if (PlayerWindow != '' && !PlayerWindow.closed)
   {
      PlayerWindow.location = url;
   }
   else 
   {
      var parms = 'width=400, height=600, menubar=no, scrollbars=no, toolbar=no,' +
         'directories=no, status=0, resizable=yes, location=no';
      PlayerWindow = window.open(url, '_blank', parms);
   }

   return false;
}