JavaScript / Image Upload Not Working

I am using PHP 5, and the FCKEditor is in ..../htdocs/fck/fckeditor directory.
All the upload settings are set and working with PHP.

<html>
....
<script type="text/javascript" src="http://localhost/fck/fckeditor/fckeditor.js"></script>
<script type="text/javascript">
   window.onload = function() {
      var div = document.getElementById("editor");
      var fck = new FCKeditor("fck");
      fck.BasePath = "fckeditor/";
      div.innerHTML = fck.CreateHtml()
   };
</script>
...
</html>