'FCKeditor' is undefined error

According to the documentation for integration in JSP, i included this line in the header:

<script type="text/javascript" src="/FCKeditor/fckeditor.js"></script>

and then i included these lines where i wanted the editor to show up:

<script type="text/javascript">
var oFCKeditor = new FCKeditor( 'FCKeditor1' ) ;
oFCKeditor.Create() ;
</script>


When i go to the webpage, i get a javascript error that says:

'FCKeditor' is undefined

How do i fix this?

Thanks.