/**
* Init function
* @param $pbid The progress id
* @param $pbarid The progress bar id
* @param $tbarid The transparent bar id
*/
public static function init($pbid='pb', $pbarid='progress-bar', $tbarid='transparent-bar'){
self::$pbid = $pbid;
self::$pbarid = $pbarid;
self::$tbarid = $tbarid;
self::$textid = 'pb_text';
self::$percentDone = 0;
}
