javascript timeago function in chinese and some modification

gistfile1.js

function(time, local){

  	(!local) && (local = Date.now());

		if (typeof time !== 'number' || typeof local !== 'number') return;

		var offset = Math.abs((local/1000 - time)),
			span   = [],
			MINUTE = 60,
			HOUR   = 3600,
			DAY    = 86400,
			WEEK   = 604800,
			MONTH  = 2629744,
			YEAR   = 31556926,
			DECADE = 315569260;

		if (offset <= MINUTE)				span = [ '', '不久' ];
		else if (offset < HOUR)				span = [ Math.floor(Math.abs(offset / MINUTE)), '分鐘' ];
		else if (offset < DAY)				span = [ Math.floor(Math.abs(offset / HOUR)), '小時' ];
		else if (offset < WEEK)				span = [ Math.floor(Math.abs(offset / DAY)), '日' ];
		else if (offset < YEAR)				span = [ Math.floor(Math.abs(offset / WEEK)), '週' ];
		else if (offset < DECADE)			span = [ Math.floor(Math.abs(offset / YEAR)), '年' ];
		else if (offset < (DECADE * 100))	span = [ Math.floor(Math.abs(offset / DECADE)), '百年' ];
		else								span = [ '', '好久好久' ];

		// span[1] += (span[0] === 0 || span[0] > 1) ? '' : '';
		span = span.join('');

		return (time <= local)  ? span + '之前' : '再' + span;
	}