var timerA;
var timerB;
var timerC;

var currentBoxA = 0;
var currentBoxB = 0;
var currentBoxC = 0;

function nextBoxA ()
{
	currentBoxA++;
	if (currentBoxA == boxesA.length) currentBoxA = 0;
	changeImages('boxA','_common/img/home/boxes/' + boxesA[currentBoxA])
	timerA = window.setTimeout('nextBoxA()',interval());
}

function nextBoxB ()
{
	currentBoxB++;
	if (currentBoxB == boxesB.length) currentBoxB = 0;
	changeImages('boxB','_common/img/home/boxes/' + boxesB[currentBoxB])
	timerB = window.setTimeout('nextBoxB()',interval());
}

function nextBoxC ()
{
	currentBoxC++;
	if (currentBoxC == boxesC.length) currentBoxC = 0;
	changeImages('boxC','_common/img/home/boxes/' + boxesC[currentBoxC])
	timerC = window.setTimeout('nextBoxC()',interval());
}

function initBoxes ()
{
	timerA = window.setTimeout('nextBoxA()',interval());
	timerB = window.setTimeout('nextBoxB()',interval());
	timerC = window.setTimeout('nextBoxC()',interval());
}

function interval ()
{
	return 5000 + Math.floor(Math.random() * 5) * 1000;
}