CKEDITOR.replace( fieldId,
            {
                height:heightVal,width:widthVal,
            toolbar: [
                { name: 'document',    items: [ 'Source' ] },
                { name: 'clipboard',   items: [ 'Cut', 'Copy', 'Paste', 'PasteText', 'PasteFromWord', 'Undo', 'Redo'] },
                { name: 'editing', items: [ 'Find', 'Replace', '-', 'SelectAll' ] },
                { name: 'basicstyles', items: [ 'Bold', 'Italic',  'Strike', 'Subscript', 'Superscript', '-', 'RemoveFormat' ] },
                { name: 'tools', items: [ 'Maximize' ] },
                { name: 'paragraph', items: [ 'NumberedList', 'BulletedList', '-', 'Outdent', 'Indent', '-', 'JustifyLeft', 'JustifyCenter', 'JustifyRight', 'JustifyBlock' ] },
                { name: 'links', items: [ 'Link', 'Unlink'] },
                { name: 'insert', items: [ 'Image',  'Table', 'Flash', 'Video'] },
                { name: 'colors', items: [ 'TextColor' ] },
                { name: 'styles', items: [ 'Styles' ,'FontSize']},
                { name: 'about', items: [ 'About' ] }
            ],
            enterMode : CKEDITOR.ENTER_DIV
            }

        );

enterMode : CKEDITOR.ENTER_P