protected static function createPlot( $config, $data, $prefix )
	{
		$plotClass	= $config[$prefix.'type'];
		$plotClass	= 'UI_Image_Graph_'.$plotClass;
		$plotObject	= new $plotClass;
		$plotConf	= self::getSubConfig( $config, $prefix );
		return $plotObject->buildPlot( $plotConf, $data );
	}