function _fnProcessingDisplay ( settings, show )
	{
		if ( settings.oFeatures.bProcessing ) {
			$(settings.aanFeatures.r).css( 'display', show ? 'block' : 'none' );
		}
	
		_fnCallbackFire( settings, null, 'processing', [settings, show] );
	}
Display or hide the processing indicator
 @param {object} settings dataTables settings object
 @param {bool} show Show the processing indicator (true) or not (false)
 @memberof DataTable#oApi