code: function ()
  	{
  		if ( this.s.master )
  		{
  			return this.s;
  		}
  		else
  		{
  			/* Look for the master which has the same DT as this one */
  			var instances = TableTools._aInstances;
  			for ( var i=0, iLen=instances.length ; i<iLen ; i++ )
  			{
  				if ( this.dom.table == instances[i].s.dt.nTable )
  				{
  					return instances[i].s;
  				}
  			}
  		}
  	}
docs: Get the settings object for the master instance. When more than one TableTools instance is
  assigned to a DataTable, only one of them can be the 'master' (for the select rows). As such,
  we will typically want to interact with that master for global properties.
  @method  _fnGetMasterSettings
  @returns {Object} TableTools settings object
  @private