Infinite Scroll scrollbar not always appearing

Hi Allan

When using infinite scroll, if the height of the default number of records is not > sScrollY no vertical scrollbar appears. Is there a workaround for this?

My config is

        "bProcessing": true,
        "bServerSide": false,
        "bDeferRender": false,
        "sAjaxSource": '<?php echo $this->sourceLink;?>?format=json',
        "aoColumnDefs": <?php echo $this->columnDefs;?>,
        "bScrollInfinite": true,
        "bScrollCollapse": true,
        "bAutoWidth": true,
        "sScrollY": "800px",
        // "sScrollX": "600px",
        "bStateSave": false,
        "oLanguage": {
        "sProcessing": "Downloading & Sorting Programs"
        },

Thanks