come? mi dice ke FCKeditor non è definito sulla linea 14, cioè

var oFCKeditor = new FCKeditor( 'MyTextarea' ) ;

codice:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
	<head>
		<title>FCKeditor - Sample</title>
		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
		<meta name="robots" content="noindex, nofollow">
		<link href="fckeditor/_samples/sample.css" rel="stylesheet" type="text/css" />
		<script type="text/javascript" src="/FCKeditor/fckeditor.js"></script>
	</head>
	<body>
		<form action="fckeditor/_samples/html/sampleposteddata.asp" method="post" target="_blank">
<script type="text/javascript"> 
window.onload = function(){ 
var oFCKeditor = new FCKeditor( 'MyTextarea' ) ; 
oFCKeditor.BasePath = '/FCKeditor/FCKeditor/' ; 
oFCKeditor.ReplaceTextarea() ; 
} 
</script>
			

			<textarea id="MyTextarea" name="testo"></textarea>

		</form>
	</body>
</html>