simple javascript edit?

I have a php script which saves my form entries to a mysql db. In my html form the following is used to hold that entry:

<input type="text" name="blog" />

Please can someone show me how this is used in the following FCKeditor code (in the place of 'oFCKeditor.Value'=):

<script type="text/javascript">

var oFCKeditor = new FCKeditor( 'FCKeditor_1' ) ;
oFCKeditor.BasePath = '/fckeditor/' ;
oFCKeditor.Height = 250 ;
oFCKeditor.Config[ 'ToolbarLocation' ] = 'Out:xToolbar' ;
oFCKeditor.Value = 'This is some sample text' ;
oFCKeditor.Create() ;

</script>


Many thanks.