"sDom": 't',"bJQueryUI": true than horizontal scroll would be come

hi,
please see below code, in my demo application the table would be expand and screen horizontal scroll would come. table width is greater than than div which use "fg-toolbar ui-toolbar ui-widget-header ui-corner-tl ui-corner-tr ui-helper-clearfix" class.

            "bFilter": false,
            "sScrollY": "600px",
            "sScrollX": "100%",
            "sScrollXInner": "105%",
            "bScrollCollapse": true,
            "bPaginate": true,
            "bStateSave": false,
            "bJQueryUI": true,
            "sPaginationType": "full_numbers",
            "bAutoWidth": true,
            "bLengthChange": true,
            "bServerSide": true,
            "bDestroy": true,
            "bCookieSet": false,
            "sAjaxSource": "DemoGrid.aspx/binddata",