function showComments () {
	cleanComments();
	parent.comments.open('songcomments.php?songtitle='+ parent.radio.songs[parent.radio.activeSongNumber], 'comments');
}

function cleanComments () {
	while (document.getElementById('songComments').firstChild != null) {
		document.getElementById('songComments').removeChild(document.getElementById('songComments').firstChild);
	}
}

function addComment () {
	cleanComments();
	parent.comments.open('songcomments.php?songtitle=' + parent.radio.songs[parent.radio.activeSongNumber] + '&author=' + document.songCommentForm.author.value + '&comment=' + document.songCommentForm.comment.value, 'comments');
}