var secs
var timerID = null
var timerRunning = false
var delay = 1000
var num

function InitializeTimer()
{
    // Set the length of the timer, in seconds
        secs = 0;
    interval = 3;
    StopTimer();
    StartTheTimer();
}

function StopTimer()
{
    if(timerRunning)
        clearTimeout(timerID);
    timerRunning = false;
}

function changeImage()
{
        var x = num;
        var y = 3;  //front image count
        while (x == num){
                x = Math.floor(Math.random()*y + 1);
        }
        num = x;
        var s = "images/front/front"+num+".jpg";
        document.bodyimg.src = s;
        //document.test.imgtitle.value = s;
}

function StartTheTimer()
{
    if ((secs % interval)==0)
    {
        changeImage();
    }
    self.status = secs;
    secs++;
    timerRunning = true;
    timerID = self.setTimeout("StartTheTimer()", delay);
}