// JavaScript Document

var numSlidesA = 5;
var numSlidesB = 4;
var currentSlideA = numSlidesA; 
var currentSlideB = numSlidesB; 
var numsecs = 8;
var secs = numsecs;
var timerID = null;
var timerRunning = false;
var delay = 1000;

function startBoxTimer()
{
    // Set the length of the timer, in seconds
    secs = numsecs;
    StopTheClock();
	switchSlideA(1);
	switchSlideB(1);
    StartTheTimer();
}

function StopTheClock()
{
    if(timerRunning)
        clearTimeout(timerID);

    timerRunning = false;
}

function StartTheTimer()
{
	if (secs==0)
	{
		StopTheClock();
		switchSlideA(1);
		switchSlideB(1);
		secs = numsecs;
		timerID = setTimeout("StartTheTimer()", delay);
	}
	else
	{
		secs = secs - 1;
		timerRunning = true;
		timerID = setTimeout("StartTheTimer()", delay);
	}
}

function switchSlideA(sDir) 
{
    newSlide = currentSlideA + sDir;
    if (!newSlide) newSlide=numSlidesA;
        if (newSlide > numSlidesA) 
		    newSlide=1;
	document.getElementById('imageA'+newSlide).style.display="block";
	document.getElementById('imageA'+currentSlideA).style.display="none";
  currentSlideA = newSlide;
}

function switchSlideB(sDir) 
{
    newSlide = currentSlideB + sDir;
    if (!newSlide) newSlide=numSlidesB;
        if (newSlide > numSlidesB) 
		    newSlide=1;
	document.getElementById('imageB'+newSlide).style.display="block";
	document.getElementById('imageB'+currentSlideB).style.display="none";
  currentSlideB = newSlide;
}