code: function _fnAjaxUpdate( oSettings )
  	{
  		if ( oSettings.bAjaxDataGet )
  		{
  			oSettings.iDraw++;
  			_fnProcessingDisplay( oSettings, true );
  			var iColumns = oSettings.aoColumns.length;
  			var aoData = _fnAjaxParameters( oSettings );
  	
  			_fnBuildAjax( oSettings, aoData, function(json) {
  				_fnAjaxUpdateDraw( oSettings, json );
  			}, oSettings );
  	
  			return false;
  		}
  		return true;
  	}
docs: Update the table using an Ajax call
  @param {object} oSettings dataTables settings object
  @returns {boolean} Block the table drawing or not
  @memberof DataTable#oApi