button position

vlademir12

can i put the button at the center of the bottom of my page? please see attached picture and codes below.
i tried to play with dom fTrltip but cant get there.

Thankss

$(document).ready(function() {
    $('#table_id').DataTable( {
        "dom": 'fTrltip',
        "tableTools": {
            "sSwfPath": "../DataTables-1.10.5/extensions/extras/TableTools-2.2.3/swf/copy_csv_xls.swf",
            "aButtons": [
                
                {
                    "sExtends":    "csv",
                    "sButtonText": "Export CSV File",
                    
                }
            ]
        }
    } );
} );

http://s190.photobucket.com/user/vlademir012/media/Untitled.png.html