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

function InitializeTimer()
{
    // Set the length of the timer, in seconds
    secs = 1
    StopTheClock()
    StartTheTimer()
}

function StopTheClock()
{
    if(timerRunning)
        clearTimeout(timerID)
    timerRunning = false
}

function StartTheTimer()
{
    if (secs==0)
    {
        StopTheClock()
        // Here's where you put something useful that's
        // supposed to happen after the allotted time.
        // For example, you could display a message:
        //alert("You have just wasted 10 seconds of your life.")
        toggleVisibility();
    }
    else
    {
        secs = secs - 1
        timerRunning = true
        timerID = self.setTimeout("StartTheTimer()", delay)
    }
}
//-->
function toggleVisibility() {  
 if( document.getElementById("time").style.visibility == "hidden" ) {
    document.getElementById("time").style.visibility = "visible";
    InitializeTimer();
  } else {
    document.getElementById("time").style.visibility = "hidden";
    InitializeTimer();
  }
}