"oTableTools": {

                        "sRowSelect": "multi",

                        "aButtons": [

                               {"sExtends": "new_record","sButtonText": "Add"},

                               {"sExtends": "select","sButtonText": "Delete Recods",

                                 "fnClick": function (nButton, oConfig, oFlash) {

                                   //delete stuff comes here

                                   alert('test');

                                           }

                                        }

                                    ]

                        }