[code]

function seconds2hms(val) {
    var obj = {};
    var sec_num = val; // don't forget the second param
    var hours   = Math.floor(sec_num / 3600);
    var minutes = Math.floor((sec_num - (hours * 3600)) / 60);
    var seconds = sec_num - (hours * 3600) - (minutes * 60);
    seconds = Number(seconds).toFixed(2);

    obj.original = val;
    obj.h = hours;
    obj.m = minutes;
    obj.s = seconds;

    if (hours   < 10) {
        hours   = "0"+hours;
    }
    if (minutes < 10) {minutes = "0"+minutes;}            
    if (seconds < 10) {seconds = "0"+seconds;}
    obj.hms = hours+':'+minutes+':'+seconds;
    return obj;
}

console.log(seconds2hms(3500));

[/code]