Javascript - Format seconds to (hh:m)m:ss

humanize.js

function formatTime (t) {
	if (typeof (t) !== "number" || t < 0) {
		return "";
	}
	function it(param) {
		var p = t % param;
		if (p < 10) p = '0' + p;
		t = Math.floor(t / param);
		return p;
	}
	
	//Seconds
	s=it(60);
	if (t == 0) return "0:" + s;
	//Minutes
	m=it(60);
	if (t == 0) return m + ":" + s;
	//Hours
	h=it(24);
	if (t == 0) return h + ":" + m + ":" + s;
	//Days
	return t + ":" + h + ":" + m + ":" + s;
},