JS timer. Plain text. Uses jQuery.

simpletimer.js

// A timer that uses jQuery only cause I'm lazy...

// Include the jQuery lib and 
// set a div to id='timerArea' and it will render
// a timer that counts down from the following date settings:

//Set up your timer!
timerLocation = "#timerArea";
timerYear = 2013;
timerMonth = 5;
timerDay = 15;
timerHour = 15;
timerMinute = 30;
timerSecond = 0;


$(document).ready( function() {
    startTimer();
}); // end ready wrapper.

timerHeight = 150;
timerWidth = 800;

hexArr =     ['0', '1', '2', '3', '4', '5', '6', '7', '8',
                        '9', 'a', 'b', 'c', 'd', 'e', 'f'];

function startTimer() {

   $(timerLocation).css({
        position: 'relative',
        width: timerWidth + "px",
        height: timerHeight + "px",
        backgroundColor: 'black',
        color: 'white',
        fontSize: "90px",
        textAlign: "center"
        });
    
    // wtf javascript.
    timerMonth--;
        
    setInterval( function() {
        // clear old timer values
        $(timerArea).empty();
        
        // prepare the dates
        var d = new Date(timerYear, timerMonth, timerDay, timerHour, timerMinute, timerSecond, 0);
        var now = new Date;
        var timeDiff = (d.getTime() - now.getTime()) / 1000; // milliseconds to seconds
        
        // set up our numbers
        var yrsTill = Math.floor(timeDiff / (60*60*24*365));
        timeDiff -= yrsTill * (60*60*24*365);
        var daysTill = Math.floor(timeDiff / (60*60*24));
        timeDiff -= daysTill * 60 * 60 * 24;
        var hrsTill = Math.floor(timeDiff / (60 * 60));
        timeDiff -= hrsTill * 60 * 60;
        var minsTill = Math.floor(timeDiff / 60);
        timeDiff -= minsTill * 60;
        var secsTill = Math.floor(timeDiff);
        
        
        // formatting:
        yrsTill = generateSpan(addZeros(yrsTill));
        daysTill = generateSpan(addZeros(daysTill));
        hrsTill = generateSpan(addZeros(hrsTill));
        minsTill = generateSpan(addZeros(minsTill));
        secsTill = generateSpan(addZeros(secsTill));
        
        $(timerArea).append(yrsTill + ":" + daysTill + ":" + hrsTill + ":" + minsTill + ":" + secsTill);
        }, 1000);
        
    }

function addZeros(nums) {
    nums = String(nums);
    if(nums.length <= 1)
        nums = "0" + nums;
    return nums;
    }

function generateSpan(yrsTill) {
    var newClr = "#";
        for(var i=0; i < 6; i++) {
            var hex = Math.round(Math.random() * (hexArr.length - 1));
            newClr = newClr + hexArr[hex];
            }
    var style = "style='color:" + newClr + ";'";
    var yrs = "<span " + style + ">" + yrsTill + "</span>";
    return yrs;
    }