function submitComment()
{
	if($('#poster').val() == '')
	{
		alert('Please type in Poster ID');
		$('#poster').focus();
		return false;
	}
	if($('#email').val() != '')
	{
		var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
		if(!filter.test($('#email').val()))
		{
			alert('Please enter a valid email address');
			$('#email').focus();
			return false;
		}
	}
	if($('#comment').val() == '')
	{
		alert('Please type in Comment');
		$('#comment').focus();
		return false;
	}
	$.post("saveComment.php", { poster: $('#poster').val(), email: $('#email').val(), comment: $('#comment').val() },
		function(data){
			if(data != '')
			{
				$('#poster').val('');
				$('#email').val('');
				$('#comment').val('');
				$('#error_msg').html('Your comment has been saved.').css('color', 'green');
				setTimeout("hideMsg();", 3000);
				
				if(commentsCount == 0)
				{
					$("#comments").html(data);
				}else{
					$("#comments").prepend(data);
				}
				commentsCount += 1;
			}
		}
	);
}
function hideMsg()
{
	$('#error_msg').css('color', 'white');
}