var seconds = 119,
    countDiv = document.getElementById('countdown'),
    secondPass,

    countDown = setInterval(function(){
        "use strict";

        secondPass();
    },1000);s
function secondPass(){
    "use strict";

    var minutes = Math.floor(seconds / 60),
        remSeconds = seconds % 60;

        if (seconds < 10){
            remSeconds = "0" + remSeconds;
        }
    countDiv.innerHTML = minutes + ":" + remSeconds;

    if (seconds > 0){
        seconds = seconds - 1;

    } else {
        clearInterval(countDown);
        countDiv.innerHTML = "Done!!";
    }};