function checkFlash(version) {
  // Major version of Flash required
  var requiredMajorVersion = version;
  // Minor version of Flash required
  var requiredMinorVersion = 0;
  // Minor version of Flash required
  var requiredRevision = 0;
  var hasReqestedVersion = DetectFlashVer(requiredMajorVersion, requiredMinorVersion, requiredRevision);
  if ( hasReqestedVersion ) {
	return true;
  } else {
	return false;
  } 
}

function musicPlayed() {
    for (var i=0;i<parent.frames.length;i++) {
         if (parent.frames[i].name == 'musicFrame')
             return true;
    }
    return false;
}

function musicButton(lang) {
  if(checkFlash(4)) {
    /* Flash ok, show Button with link */
	document.write('<a href="javascript:musicOnOff();">');
    if(musicPlayed()) {
      /* Music is on, show Button off */
	  document.write('<img src="/images/layout/'+lang+'/toplogo_right_music_off.jpg" alt="" border="0">');
	} else {
	  /* Music is off, show Button on */
	  document.write('<img src="/images/layout/'+lang+'/toplogo_right_music_on.jpg" alt="" border="0">');
	}
	document.write('</a>');
  } else {
    /* No Flash available, do not show controls */
	document.write('<img src="/images/layout/toplogo_right.jpg" alt="" border="0">');
  }
  return false;
}

function musicOnOff() {
   if(musicPlayed()) {
     top.location.href = document.location.href;
   } else {
     document.location.href = '/main.php?d=' + document.location.href;
   }
}