gistfile1.txt

                  function sumup_time(t1, t2){
			if (t2.split(':').length == 2){
				t2 = '00:'+t2;
			}
			var d1 = new Date(0);
			var d2 = new Date(0);

			if (parse_time(t1).hh != '00'){
				d1.setHours(parse_time(t1).hh);
			} else {
				d1.setHours(0);
			}
			d1.setMinutes(parse_time(t1).mm);
			d1.setSeconds(parse_time(t1).ss);

			if (parse_time(t2).hh != '00'){
				d2.setHours(parse_time(t2).hh);
			}
			d2.setMinutes(parse_time(t2).mm);
			d2.setSeconds(parse_time(t2).ss);

			var result = d1.getTime() + d2.getTime();
			var newDate = new Date(result);

			var hh = "" + newDate.getHours();
			var mm = "" + newDate.getMinutes();
			var ss = "" + newDate.getSeconds();

			console.log(hh, mm, ss);

			if(hh.length < 2) hh = "0" + hh;
			if(mm.length < 2) mm = "0" + mm;
			if(ss.length < 2) mm = "0" + ss;

			return {hh: hh, mm: mm, ss: ss}
		}

// sumup_time('00:26:20', '01:09:17')
// 21 35 37