$(document).ready(function() {
        $('#table_id tbody').on('click', 'tr', function () {
            var oTT = TableTools.fnGetInstance("table_id");
            //if we are already selected, need to unselect
            if ($(this).hasClass("selected")) {
                $(this).removeClass("selected");
                oTT.fnDeselect($(this));
            } else {
                $(this).toggleClass('selected');
                oTT.fnSelect($(this));
            }
        } );
    });